{"id":3245,"date":"2020-05-04T16:15:21","date_gmt":"2020-05-04T15:15:21","guid":{"rendered":"https:\/\/www.f5uii.net\/?p=3245"},"modified":"2023-03-22T07:19:55","modified_gmt":"2023-03-22T06:19:55","slug":"transmit-datv-over-qo100-with-sdr-adalm-pluto-f5oeo-plutodvb","status":"publish","type":"post","link":"https:\/\/www.f5uii.net\/en\/transmit-datv-over-qo100-with-sdr-adalm-pluto-f5oeo-plutodvb\/","title":{"rendered":"Transmit digital television signals over Qatar Oscar 100 satellite"},"content":{"rendered":"<p>DATV: How to encode in h.265 with an external HDMI encoder<\/p>\n<p>Notez qu&#8217;Evariste est actuellement (mai 2020) au travail pour diminuer les d\u00e9lais d&#8217;encodage, et faire en sorte que le flux soit plus conforme aux normes DVB-S2, DVB-S\u00a0 (<a href=\"https:\/\/twitter.com\/F5OEOEvariste\/status\/1256680386610040832?s=20\" target=\"_blank\" rel=\"noopener noreferrer\">Voir le tweet de @f5oeo \u00e0 ce sujet<\/a>). On attend toujours avec impatiente la livraison de ses d\u00e9veloppements&#8230;<\/p>\n<p>&nbsp;<\/p>\n<h2><\/h2>\n<p><!--nextpage--><\/p>\n<h2 class=\"np-title np-added\">Les r\u00e8gles d&#8217;utilisation et plan de bande du transpondeurs DATV<\/h2>\n<blockquote><p>This page is the official rules established for usage of the wideband transponder of the QO-100 satellite. March 2020 edition. <a href=\"https:\/\/wiki.batc.org.uk\/QO-100_WB_Bandplan\" target=\"_blank\" rel=\"noopener noreferrer\">See the BATC website for the current version<\/a>.<\/p><\/blockquote>\n<p>Due to the very large number of potential users, all transmitting stations should monitor the wideband spectrum monitor and the co-ordination chat window that has been established by AMSAT-DL and the BATC at <a href=\"https:\/\/eshail.batc.org.uk\/wb\/\">https:\/\/eshail.batc.org.uk\/wb\/<\/a><\/p>\n<h3>Transponder Usage<\/h3>\n<p>En r\u00e8gle g\u00e9n\u00e9rale, le transpondeur ne doit \u00eatre utilis\u00e9 que pour des tests et des contacts de courte dur\u00e9e. Les seules transmissions de longue dur\u00e9e (plus de 10 minutes) devraient \u00eatre :<\/p>\n<ul>\n<li>Le canal de la balise TV en liaison montante depuis le Qatar ou Bochum.<\/li>\n<li>Vid\u00e9o des s\u00e9ances en direct de l&#8217;AMSAT et des conf\u00e9rences t\u00e9l\u00e9vis\u00e9es d&#8217;amateurs de port\u00e9e g\u00e9n\u00e9rale. Exemples possibles :\n<ul>\n<li>Conf\u00e9rences nationales de l&#8217;AMSAT<\/li>\n<li>Conventions nationales sur la t\u00e9l\u00e9vision amateur<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>Les contenus suivants sont inacceptables :<\/p>\n<ul>\n<li>Enregistrements ou diffusion d&#8217;\u00e9v\u00e9nements qui ne concernent pas explicitement les satellites amateurs ou la t\u00e9l\u00e9vision amateur<\/li>\n<li>Transmission de tout support prot\u00e9g\u00e9 par des droits d&#8217;auteur (tels que des films ou cha\u00eenes de t\u00e9l\u00e9vision)<\/li>\n<li>Transmission r\u00e9p\u00e9titive de vid\u00e9os d&#8217;essai, sauf si elles sont essentielles pour l&#8217;alignement des \u00e9quipements<\/li>\n<\/ul>\n<p>La retransmission de signaux de t\u00e9l\u00e9vision amateur terrestre est d\u00e9conseill\u00e9e, sauf si le contenu pr\u00e9sente un int\u00e9r\u00eat exceptionnel pour les radioamateurs.<\/p>\n<h3><strong>Puissance de transmission<\/strong><\/h3>\n<p>Toutes les transmissions doivent utiliser en voie montante le minimum de puissance possible. Les transmissions QPSK doivent avoir un signal de liaison descendante avec une densit\u00e9 de puissance inf\u00e9rieure d&#8217;au moins 1 dB \u00e0 celle de la balise &#8211; Le syst\u00e8me de monitoring du spectre disponible en ligne permet aux utilisateurs de r\u00e9gler leur puissance d\u2019\u00e9mission pour y parvenir. Les transmissions avec des d\u00e9bits inf\u00e9rieurs \u00e0 333 kS utilisant 8PSK, 16 APSK ou 32 APKS doivent utiliser la puissance minimale n\u00e9cessaire pour obtenir une bonne r\u00e9ception.<\/p>\n<h3><strong>Modes de transmission<\/strong><\/h3>\n<p>Les transmissions doivent utiliser le DVB-S2 dans la mesure du possible.\u00a0 Pour les transmissions en d\u00e9finition standard classique, 2 MS est le d\u00e9bit maximum de symboles qui doit \u00eatre utilis\u00e9 de facto.<\/p>\n<p>Pour permettre un d\u00e9codage facile, les PID DVB suivants sont recommand\u00e9s : Vid\u00e9o 256, Audio 257, PMT 32 ou 4095, PCR 256 ou 258.\u00a0 Le nom du service doit correspondre \u00e0 l\u2019indicatif d&#8217;appel. Les PID PMT 4000 &#8211; 4010 ne doivent pas \u00eatre utilis\u00e9s.<\/p>\n<p>Les mercredis (heure UTC), les exp\u00e9rimentateurs sont encourag\u00e9s \u00e0 essayer d&#8217;autres modes &#8211; peut-\u00eatre 6 MS utilisant l&#8217;ensemble du transpondeur pendant de br\u00e8ves p\u00e9riodes (moins de 10 minutes). Il est essentiel que les utilisateurs annoncent leurs essais sur la page du salon de discussion (chat), et qu&#8217;ils la surveillent en permanence.<\/p>\n<p>Les exp\u00e9rimentations utilisant des modes inhabituels (par exemple <em>ranging<\/em>) doivent utiliser le segment inf\u00e9rieur de 1,5 MHz de la partie DATV large et \u00e9troit (\u2018\u2019Wide and Narrow DATV\u2019\u2019).<\/p>\n<h3><strong>Balise<\/strong><\/h3>\n<p>La balise (Beacon) \u00e9met en continu (10491,5 MHz, DVB-S2, SR 1500 kS) pour fournir un signal de test et permettre aux nouveaux utilisateurs d&#8217;aligner pr\u00e9cis\u00e9ment leurs antennes.<\/p>\n<h3><strong>Plan de bande<\/strong><\/h3>\n<p id=\"lOSRHPO\"><img loading=\"lazy\" decoding=\"async\" width=\"596\" height=\"179\" class=\"alignnone size-full wp-image-3470 \" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c54a3c1685.png\" alt=\"\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c54a3c1685.png 596w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c54a3c1685-300x90.png 300w\" sizes=\"auto, (max-width: 596px) 100vw, 596px\" \/><\/p>\n<div id=\"attachment_3484-3\" style=\"width: 1080px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/QO-100-Eshail-2-Wideband-Spectrum-Monitor.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3484-3\" class=\"wp-image-3484 size-full\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/QO-100-Eshail-2-Wideband-Spectrum-Monitor.jpg\" alt=\"\" width=\"1070\" height=\"629\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/QO-100-Eshail-2-Wideband-Spectrum-Monitor.jpg 1070w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/QO-100-Eshail-2-Wideband-Spectrum-Monitor-300x176.jpg 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/QO-100-Eshail-2-Wideband-Spectrum-Monitor-768x451.jpg 768w\" sizes=\"auto, (max-width: 1070px) 100vw, 1070px\" \/><\/a><p id=\"caption-attachment-3484-3\" class=\"wp-caption-text\">QO-100 Es&#8217;hail-2 Wideband Spectrum Monitor<\/p><\/div>\n<ol>\n<li>Les transmissions DATV \u00e9troites doivent \u00eatre limit\u00e9es \u00e0 la section DATV \u00e9troite (\u2018\u2019Narrow DATV\u2019), mais peuvent utiliser la section DATV large et \u00e9troite (\u2018\u2019Wide and Narrow DATV\u2019\u2019) si la section DATV \u00e9troite est enti\u00e8rement occup\u00e9e.<\/li>\n<li>Une liaison montante de maintenance occupant la bande 10494,0 MHz &#8211; 10497,0 MHz sera utilis\u00e9e tr\u00e8s occasionnellement ; les utilisateurs sont pri\u00e9s de lui donner la priorit\u00e9 absolue lorsqu&#8217;ils sont avertis.<\/li>\n<li>Les fr\u00e9quences ponctuelles recommand\u00e9es pour divers usages et d\u00e9bits (SR) sont indiqu\u00e9es ci-dessous.<\/li>\n<\/ol>\n<table width=\"683\">\n<tbody>\n<tr>\n<td width=\"83\"><strong>Mode<\/strong><\/td>\n<td width=\"91\"><strong>Symbol Rate SR (\/s)<\/strong><\/td>\n<td width=\"95\"><strong>Fr\u00e9q Mont\u00e9e MHz<\/strong><\/td>\n<td width=\"106\"><strong>Fr\u00e9q<\/strong><\/p>\n<p><strong>Descente<\/strong><\/p>\n<p><strong>MHz<\/strong><\/td>\n<td width=\"308\"><strong>Notes<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"83\">Balise<\/td>\n<td width=\"91\">1500 kS<\/td>\n<td width=\"95\">2402.0<\/td>\n<td width=\"106\">10491.5<\/td>\n<td width=\"308\">Balise DVB-S2 FEC 4\/5<\/td>\n<\/tr>\n<tr>\n<td colspan=\"5\" width=\"683\"><\/td>\n<\/tr>\n<tr>\n<td width=\"83\">Large<\/td>\n<td width=\"91\">1 MS<\/td>\n<td width=\"95\">2403.75<\/td>\n<td width=\"106\">10493.25<\/td>\n<td rowspan=\"3\" width=\"308\">Les transmissions 1.5 MS et\u00a0 2 MS doivent utiliser cette partie de la bande<\/td>\n<\/tr>\n<tr>\n<td width=\"83\">Large<\/td>\n<td width=\"91\">1 MS<\/td>\n<td width=\"95\">2405.25<\/td>\n<td width=\"106\">10494.75<\/td>\n<\/tr>\n<tr>\n<td width=\"83\">Large<\/td>\n<td width=\"91\">1 MS<\/td>\n<td width=\"95\">2406.75<\/td>\n<td width=\"106\">10496.25<\/td>\n<\/tr>\n<tr>\n<td colspan=\"5\" width=\"683\"><\/td>\n<\/tr>\n<tr>\n<td width=\"83\">Etroit<\/td>\n<td width=\"91\">333 kS<\/td>\n<td width=\"95\">2403.25<\/td>\n<td width=\"106\">10492.75<\/td>\n<td rowspan=\"3\" width=\"308\">Utilisez ces 14 fr\u00e9quences pour 500 kS, 333 kS et 250 kS<\/p>\n<p>&nbsp;<\/p>\n<p>Utilisez d&#8217;abord les fr\u00e9quences sup\u00e9rieures \u00e0 10497.0<\/td>\n<\/tr>\n<tr>\n<td colspan=\"4\" width=\"375\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Ensuite, tous les 500 kHz jusqu&#8217;\u00e0<\/td>\n<\/tr>\n<tr>\n<td width=\"83\">Etroit<\/td>\n<td width=\"91\">333 kS<\/td>\n<td width=\"95\">2409.75<\/td>\n<td width=\"106\">10499.25<\/td>\n<\/tr>\n<tr>\n<td colspan=\"5\" width=\"683\"><\/td>\n<\/tr>\n<tr>\n<td width=\"83\">Tr\u00e8s \u00e9troit<\/td>\n<td width=\"91\">125 kS<\/td>\n<td width=\"95\">2403.25<\/td>\n<td width=\"106\">10492.75<\/td>\n<td rowspan=\"3\" width=\"308\">Utilisez ces 27 fr\u00e9quences pour 125 kS, 66 kS et 33 kS<\/p>\n<p>&nbsp;<\/p>\n<p>Utilisez d&#8217;abord les fr\u00e9quences sup\u00e9rieures \u00e0 10497.0<\/td>\n<\/tr>\n<tr>\n<td colspan=\"4\" width=\"375\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Ensuite, tous les 250 kHz jusqu&#8217;\u00e0<\/td>\n<\/tr>\n<tr>\n<td width=\"83\">Tr\u00e8s \u00e9troit<\/td>\n<td width=\"91\">125 kS<\/td>\n<td width=\"95\">2409.75<\/td>\n<td width=\"106\">10499.25<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ol start=\"4\">\n<li>Mont\u00e9e 2401.0 &#8211; 2410.0 MHz RHCP, Descente 10490.5 &#8211; 10499.5 MHz Horizontal.<\/li>\n<\/ol>\n<p><!--nextpage--><\/p>\n<h2 class=\"np-title np-added\">Conclusion<\/h2>\n<div id=\"tablepress-7_wrapper\" class=\"dataTables_wrapper no-footer\">\n<p>J&#8217;esp\u00e8re que cet article sur la DATV et le PlutoSDR puisse aider certains radioamateurs \u00e0 passer \u00e0 l&#8217;\u00e9mission de t\u00e9l\u00e9vision d&#8217;amateur. Si malgr\u00e9 l&#8217;attention que j&#8217;ai appliqu\u00e9 \u00e0 son contenu, certains points peuvent se trouver \u00eatre impr\u00e9cis voire erron\u00e9s. Je ne suis pas un sp\u00e9cialiste DATV, mais un vrai d\u00e9butant, qui a fait sa premi\u00e8re exp\u00e9rience DATV avec QO-100 en d\u00e9cembre 2019&#8230; N&#8217;h\u00e9sitez pas \u00e0 me solliciter \u00e0 travers des commentaires (en bas de l&#8217;article) pour apporter votre contribution aux lecteurs.<\/p>\n<p>Je vais prochainement \u00e9crire un article sur la r\u00e9ception DATV en tant que tel, forc\u00e9ment n\u00e9cessaire \u00e0 toute station d&#8217;\u00e9mission (et traiter lamise en oeuvre de <a href=\"https:\/\/boutique.r-e-f.org\/kits-et-composants\/281-minitiouner-s.html\" target=\"_blank\" rel=\"noopener noreferrer\">Minitiouner Pro<\/a>, mais aussi celle de <a href=\"https:\/\/forum.amsat-dl.org\/index.php?thread\/101-software-dvb-s-demodulator\/\" target=\"_blank\" rel=\"noopener noreferrer\">la solution SDR de Markro92, le d\u00e9modulateur logiciel<\/a>). Un autre projet serait un article sur l&#8217;\u00e9mission DATV qui utilise l&#8217;\u00e9metteur LimeSDR-mini et un raspberry-pi sur lequel est install\u00e9 les outils Portsdown. Cette configuration \u00e9tait celle que j&#8217;ai mis en oeuvre en premier lieu.<\/p>\n<p>N&#8217;h\u00e9sitez pas \u00e0 poster en commentaires vos exp\u00e9riences, vos remarques qui sont le bien venu pour compl\u00e9ter l&#8217;article.<\/p>\n<p>Je tiens \u00e0 pr\u00e9ciser que pour vos besoins de support technique, cela n&#8217;est envisag\u00e9 uniquement au travers des commentaires afin que tous les lecteurs puissent y contribuer, et en profiter \u00e9galement. Aucun support par contact priv\u00e9 (email) ne sera assur\u00e9. Je vous invite \u00e9galement \u00e0 suivre mon <a href=\"https:\/\/twitter.com\/f5uii\/\" target=\"_blank\" rel=\"noopener noreferrer\">compte twitter @f5uii<\/a> d\u00e9di\u00e9 exclusivement aux activit\u00e9s radioamateurs, et sur lequel beaucoup d&#8217;actualit\u00e9s et informations techniques int\u00e9ressantes circulent et que je relaye volontiers.<\/p>\n<p>Tr\u00e8s bonne \u00e9mission DATV via le satellite Es\u2019hail 2 \/ Phase 4A \/ Qatar Oscar 100 !<\/p>\n<\/div>\n<p>Following my previous article on the <a href=\"https:\/\/www.f5uii.net\/transmit-over-qo100-eshail2-oscar-satellite-sdrconsole-limesdr-adalm-pluto\/\">transmission to the Qatar Oscar 100 satellite with SDR technology (LimeSDR, Adalm pluto)<\/a> which was dedicated to the narrow-band transponder transmission (SSB and modes with spectral width less than 2.7 kHz), here is an article that should this time interest those who are willing to embark on the digital amateur television program, commonly called DATV (Digital Amateur Television).<\/p>\n<p>As you may have read so far, I have a LimeSDR-mini but now also an Adalm Pluto. During one of my conferences (in french &#8211; see <a href=\"https:\/\/www.f5uii.net\/en\/actualites\/conference-amsat-francophone-qo100-sdr-07-03-2020\/\">Amsat Francophone Conference<\/a>), I had the occasion to compare the two equipments, their advantages and disadvantages. I had the experience to transmit in DATV to QO100 with both the LimeSDR-mini and the Adalm Pluto. Both models work very well, but I will focus in this article on the use of the Adalm Pluto, because finally it is today the solution that is the easiest to implement. Indeed, to transmit with LimeSDR, a Raspberry Pi is necessary. In the case of the Adalm Pluto and especially thanks to the developments of a specific firmware of Evariste F5OEO, we do without this nanocomputer, the Adalm rather embedding the software directly.<\/p>\n<p>In this article, as usual, we will go step by step through all the operations described as precisely as possible.<\/p>\n<p>I use the Windows operating system. I won&#8217;t go into the details of the operation of the transmission modes themselves, not being a specialist in the fundamentals.\u00a0 My goal is to bring to your knowledge all the steps that will allow you to build your own transmitting station, and transmit images. It is possible that the software evolving, certain functions, or operations themselves are to be made evolve. Do not hesitate to submit your questions, problems of implementation directly in comment of the article.<\/p>\n<p>Here is the diagram of principle which we will implement, to transmit our DATV videos to the QO-100 satellite.<\/p>\n<div id=\"attachment_3486-2\" style=\"width: 724px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3486-2\" class=\"wp-image-3486 size-full\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea575d3f3e5e.png\" alt=\"\" width=\"714\" height=\"356\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea575d3f3e5e.png 714w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea575d3f3e5e-300x150.png 300w\" sizes=\"auto, (max-width: 714px) 100vw, 714px\" \/><p id=\"caption-attachment-3486-2\" class=\"wp-caption-text\">Schematic diagram of a DATV broadcast with OBS Studio and Adalm Pluto or LimeSDR<\/p><\/div>\n<p>I don&#8217;t come back in this article to the basis of adjustment of dishes, antennas, transmitter that you find in my previous articles (\u00a0<a href=\"https:\/\/www.f5uii.net\/reception-satellite-qatar-oscar-100-phase-4a-eshail-2-sdr-console-sdr-radio-software\/\">Receiving Qatar Oscar 100 satellite with SDR Console<\/a> , <a href=\"https:\/\/www.f5uii.net\/transmit-over-qo100-eshail2-oscar-satellite-sdrconsole-limesdr-adalm-pluto\/\">The transmission over Qatar Oscar 100 satellite with SDR Console<\/a>).<\/p>\n<blockquote><p><span style=\"color: #d95050;\">Let us remind in the preamble that radio broadcasting is regulated at the international level, at the national level and that only holders of class 1 and class 2 amateur radio licences are authorized to transmit on the allocated frequency bands.<\/span><\/p><\/blockquote>\n<p><em>This article is &#8220;multi-page&#8221;, to browse from one page to another or directly from the table of contents to the desired page.<\/em><\/p>\n<p><!--nextpage--><\/p>\n<h2 class=\"np-title np-added\">Introducing Adalm Pluto &#8211; The Full-Duplex SDR Transmitter Receiver<\/h2>\n<p id=\"QKmPyen\"><a href=\"https:\/\/www.f5uii.net\/?attachment_id=3355#main\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-3355\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e907612a7e14.png\" alt=\"\" width=\"176\" height=\"269\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e907612a7e14.png 448w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e907612a7e14-196x300.png 196w\" sizes=\"auto, (max-width: 176px) 100vw, 176px\" \/><\/a><\/p>\n<p>The Adalm-Pluto also called PlutoSDR is an SDR transceiver offered by Analog Device at a relatively low price. It is presented as a platform for learning for students in the fields of science, technology or engineering.<\/p>\n<p>Various software such as MATLAB or Simulink are graphical user interfaces (GUI) for applied developments.But in order to transmit in DATV we are not going to start on the road to development ourselves, since others are doing it for us.<\/p>\n<p>Based on the AD9363, it is capable of generating or receiving analog RF signals from 325 to 3800 MHz, and up to 61.44 mega samples per second (MSPS) with a bandwidth of 20 MHz.<\/p>\n<hr \/>\n<h3>Acquiring Adalm Pluto<\/h3>\n<p>Obviously, the first thing is to acquire the equipment. Several suppliers make the box available, at different prices. I let you check the delivery conditions and customs taxes applicable by these intermediaries.<\/p>\n<ul>\n<li><a href=\"https:\/\/s.click.aliexpress.com\/e\/_d8qs8MQ\" target=\"_blank\" rel=\"noopener noreferrer\">Aliexpress<\/a><\/li>\n<li><a href=\"https:\/\/amzn.to\/2UZEXl1\" target=\"_blank\" rel=\"noopener noreferrer\">Amazon\u00a0<\/a><\/li>\n<li><a href=\"https:\/\/rover.ebay.com\/rover\/1\/711-53200-19255-0\/1?mpre=https%3A%2F%2Fwww.ebay.com%2Fitm%2F402239217315%3FViewItem%3D%26item%3D402239217315&amp;campid=5338475756&amp;toolid=20008\" target=\"_blank\" rel=\"noopener noreferrer\">Ebay &#8211; German seller who provides the modified PlutoSDR with the TCXO of good stability already installed &#8211; and on request the F5OEO firmware installed<\/a><\/li>\n<li><a href=\"https:\/\/www.mouser.com\/ProductDetail\/Analog-Devices\/ADALM-PLUTO?qs=sGAEpiMZZMtI26rxh1qzjglFH8FXhl9K8VR3iZc2OOA=\" target=\"_blank\" rel=\"noopener noreferrer\">Mouser in the USA<\/a><\/li>\n<li><a href=\"https:\/\/www.passion-radio.com\/sdr-transceivers\/pluto-sdr-788.html\" target=\"_blank\" rel=\"noopener noreferrer\">Passion radio in France<\/a><\/li>\n<\/ul>\n<h3>Improving the functioning and stability of Adalm Pluto<\/h3>\n<p>I am using an Adalm Pluto with hardware Revision B (See its label: PCB Rev.). You can observe &#8211; in any case in SSB transmission with SDR Console &#8211; from time to time crashes of the USB link. These easily disappear by applying a minor modification to the board. Either you change the resistance value of R88 from 1k to 10k, as indicated on the\u00a0<a href=\"https:\/\/wiki.analog.com\/university\/tools\/pluto\/hacking\/hardware#revision_b\" target=\"_blank\" rel=\"noopener noreferrer\">wiki website of <\/a>Analog Device\u2122 (and planned on the next revision C), or you make the simple modification (which I chose to implement) of connecting PGND and GND grounds together, by placing a conductor between D3 (GND) and R58 (PGND).<\/p>\n\n\t\t<style>\n\t\t\t#gallery-2 {\n\t\t\t\tmargin: auto;\n\t\t\t}\n\t\t\t#gallery-2 .gallery-item {\n\t\t\t\tfloat: left;\n\t\t\t\tmargin-top: 10px;\n\t\t\t\ttext-align: center;\n\t\t\t\twidth: 50%;\n\t\t\t}\n\t\t\t#gallery-2 img {\n\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t}\n\t\t\t#gallery-2 .gallery-caption {\n\t\t\t\tmargin-left: 0;\n\t\t\t}\n\t\t\t\/* see gallery_shortcode() in wp-includes\/media.php *\/\n\t\t<\/style>\n\t\t<div id='gallery-2' class='gallery galleryid-3245 gallery-columns-2 gallery-size-large'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/PlutoSDR-Ground-connections.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"540\" height=\"370\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/PlutoSDR-Ground-connections.jpg\" class=\"attachment-large size-large\" alt=\"\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/PlutoSDR-Ground-connections.jpg 972w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/PlutoSDR-Ground-connections-300x206.jpg 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/PlutoSDR-Ground-connections-768x526.jpg 768w\" sizes=\"auto, (max-width: 540px) 100vw, 540px\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/Ground-Modification-Adalm-Pluto.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"540\" height=\"619\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/Ground-Modification-Adalm-Pluto.jpg\" class=\"attachment-large size-large\" alt=\"\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/Ground-Modification-Adalm-Pluto.jpg 803w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/Ground-Modification-Adalm-Pluto-262x300.jpg 262w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/Ground-Modification-Adalm-Pluto-768x881.jpg 768w\" sizes=\"auto, (max-width: 540px) 100vw, 540px\" \/><\/a>\n\t\t\t<\/dt><\/dl><br style=\"clear: both\" \/>\n\t\t<\/div>\n\n<p>&nbsp;<\/p>\n<h4>Improving stability<\/h4>\n<h5>Replace crystal TCXO<\/h5>\n<p><a href=\"https:\/\/www.f5uii.net\/?attachment_id=3364#main\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-3364\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e918091b5b8d.png\" alt=\"\" width=\"365\" height=\"235\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e918091b5b8d.png 696w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e918091b5b8d-300x193.png 300w\" sizes=\"auto, (max-width: 365px) 100vw, 365px\" \/><\/a>I warn you right away that this change is not necessary, if you only intend to transmit amateur TV pictures to QO100. But as you often use your PlutoSDR transmitter for SSB as well, you might as well consider how to make this oscillator replacement. When it comes out of the box, the Adalm Pluto is rather unstable when transmitting on 2400 MHz. It is originally equipped with a reference quartz crystal, a 40MHz TCXO RAKON RXO3225M with a stability of +\/- 25 ppm on its operating frequency range from -40 to 85\u00b0C. This means that at the frequency of rise to QO100, 2400 MHz, the signal will drift rapidly, depending on the temperature, by a few tens of Hertz. To use the Adalm Pluto SSB and the narrow band transponder of QO100, you will have to replace this unstable quartz by a TCXO with better stability.<\/p>\n<p>Smaller than the original RAKON (3.2 x 2.5), the TCXO ABRACON ASTX-13-C-40.000MHz-I05-T is supplied with 1.8V like the original, its dimensions are 2.0 x 1.6 mm. It has an announced stability of +\/- 0.5ppm. Some people advise to take advantage of this by placing the TCXO in a location that is less subject to temperature rises. I invite you to read <a href=\"https:\/\/www.f1te.org\/index.php\/realisations\/sdr\/adalm-pluto\" target=\"_blank\" rel=\"noopener noreferrer\">Lucien F1TE&#8217;s (french) article<\/a> on this subject.<\/p>\n<div id=\"attachment_3714-2\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/TCXO-Adalm-Pluto-ppm.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3714-2\" class=\"wp-image-3714 size-medium\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/TCXO-Adalm-Pluto-ppm-300x232.jpg\" alt=\"\" width=\"300\" height=\"232\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/TCXO-Adalm-Pluto-ppm-300x232.jpg 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/TCXO-Adalm-Pluto-ppm-768x595.jpg 768w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/TCXO-Adalm-Pluto-ppm.jpg 1109w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-3714-2\" class=\"wp-caption-text\">TCXO ABRACON replacing the RAKON one<\/p><\/div>\n<p>You can find this TCXO ABRACON at the major distributors of electronic components but also some other resellers:<\/p>\n<ul>\n<li><a href=\"https:\/\/www.mouser.com\/ProductDetail\/ABRACON\/ASTX-13-C-40000MHz-I05-T?qs=w%2Fv1CP2dgqql1m8vF142fw==\" target=\"_blank\" rel=\"noopener noreferrer\">Mouser (USA)<\/a><\/li>\n<li><a href=\"https:\/\/rover.ebay.com\/rover\/1\/711-53200-19255-0\/1?mpre=https%3A%2F%2Fwww.ebay.com%2Fitm%2FTCXO-40MHz-1-8V-ASTX-13-C-40-000MHz-I05-T-0-5ppm-fur-ADALM-Pluto-SDR-QO-100%2F202897320309%3Fhash%3Ditem2f3d9f6975%3Ag%3AxRsAAOSwQKZdFQ3A&amp;campid=5338475756&amp;toolid=20008\" target=\"_blank\" rel=\"noopener noreferrer\">Ebay (german seller)<\/a><\/li>\n<\/ul>\n<div id=\"attachment_3368-2\" style=\"width: 228px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e918c04d5d8e.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3368-2\" class=\" wp-image-3368\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e918c04d5d8e.png\" alt=\"\" width=\"218\" height=\"209\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e918c04d5d8e.png 906w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e918c04d5d8e-300x288.png 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e918c04d5d8e-768x737.png 768w\" sizes=\"auto, (max-width: 218px) 100vw, 218px\" \/><\/a><p id=\"caption-attachment-3368-2\" class=\"wp-caption-text\">Murata TCXO 0.2ppm 3.0V<\/p><\/div>\n<p>Another alternative is to use the TCXO MURATA XNCLH40M000THJA1P0 which is given at +\/- 0.2ppm, but with a dimension of 5.0 x 3.2 mm and is powered by 3.0V. DM4DS to propose a small adapter board (a divider bridge to pass the 3.3V power supply point (recovered on C165) as well as a <a href=\"https:\/\/www.youtube.com\/watch?v=YEeDGSzZc1A\" target=\"_blank\" rel=\"noopener noreferrer\">video explaining the power supply points and connections<\/a>.<\/p>\n<h5>Injecting an external reference signal<\/h5>\n<div id=\"attachment_3373-2\" style=\"width: 269px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.f5uii.net\/?attachment_id=3373#main\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3373-2\" class=\" wp-image-3373\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e91dad903cb9.png\" alt=\"\" width=\"259\" height=\"198\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e91dad903cb9.png 1066w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e91dad903cb9-300x229.png 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e91dad903cb9-768x587.png 768w\" sizes=\"auto, (max-width: 259px) 100vw, 259px\" \/><\/a><p id=\"caption-attachment-3373-2\" class=\"wp-caption-text\">DL4TMA : Adding an external SMA connector<\/p><\/div>\n<p>To improve the stability of the PlutoSDR, we can also bring instead of the TCXO, a very stable external signal which can be that of a GPS-controlled oscillator, or even a rubidium oscillator, like those embedded in satellites, why not. You don&#8217;t have to bring 40 MHz, but the Adalm Pluto can receive a signal in the range of 10 to 80 MHz. Of course, the PlutoSDR will have to be set up with the new reference frequency.<\/p>\n<p>The existing TCXO has to be unsoldered and the external signal has to be brought in Pin 3, which has to be 1.8V peak-to-peak maximum. On the PlutoSDR board, C123\/C124 as an AC divider to get things down to 1.3V p-p. The internal capacitance of the pin means we don&#8217;t actually need to stuff C124 to achieve this.<\/p>\n<p>&nbsp;<\/p>\n<hr \/>\n<p>Another suggestion from F4DAV is to use pin 1 E\/D (Enable\/Disable) of the TCXO RAKON to enable or disable operation of the original TCXO. By setting Pin 1 to ground (GND), the TCXO RAKON is disabled.<\/p>\n<div id=\"attachment_3388-2\" style=\"width: 446px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e92eb1b6b558.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3388-2\" class=\"wp-image-3388\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e92eb1b6b558.png\" alt=\"\" width=\"436\" height=\"218\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e92eb1b6b558.png 1024w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e92eb1b6b558-300x150.png 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e92eb1b6b558-768x384.png 768w\" sizes=\"auto, (max-width: 436px) 100vw, 436px\" \/><\/a><p id=\"caption-attachment-3388-2\" class=\"wp-caption-text\">Implementation by F4DAV<\/p><\/div>\n<div id=\"attachment_3390-2\" style=\"width: 393px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/External_click_disable_tcxo_plutosdr_f01.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3390-2\" class=\"wp-image-3390\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/External_click_disable_tcxo_plutosdr_f01-1280x808.jpg\" alt=\"\" width=\"383\" height=\"242\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/External_click_disable_tcxo_plutosdr_f01-1280x808.jpg 1280w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/External_click_disable_tcxo_plutosdr_f01-300x189.jpg 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/External_click_disable_tcxo_plutosdr_f01-768x485.jpg 768w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/External_click_disable_tcxo_plutosdr_f01.jpg 1430w\" sizes=\"auto, (max-width: 383px) 100vw, 383px\" \/><\/a><p id=\"caption-attachment-3390-2\" class=\"wp-caption-text\">Original TCXO disable command for PlutoSDR<\/p><\/div>\n<p>&nbsp;<\/p>\n<h5>Program the new reference frequency and reboot your PlutoSDR<\/h5>\n<p>If your external reference or TCXO is not at 40MHz, but for example at 25MHz, you will need to indicate this change to the AD9363. To do so, connect to the Pluto (as described later in the paragraph <a href=\"#plutosdrconnect\">Connection to the Pluto SDR by terminal<\/a> in this article).<\/p>\n<pre class=\"lang:sh decode:true\">fw_setenv ad936x_ext_refclk \"&lt;25000000&gt;\"\r\nfw_setenv xo_correction 25000000\r\npluto_reboot reset<\/pre>\n<p>To check if the changes have been taken into account, reconnect and launch the command<\/p>\n<pre class=\"lang:sh decode:true \">cat \/proc\/device-tree\/clocks\/clock@0\/clock-frequency | xxd<\/pre>\n<p>That should bring you the line<\/p>\n<pre class=\"lang:sh decode:true\"># 00000000: 017d 7840 .}x@<\/pre>\n<p>The result is in hexadecimal. The hex value 017d7840 is indeed 25000000 decimal (check for example with this <a href=\"https:\/\/www.rapidtables.com\/convert\/number\/hex-to-decimal.html\" target=\"_blank\" rel=\"noopener noreferrer\">online converter<\/a>), so our frequency has been applied.<\/p>\n<hr \/>\n<p>Here are some references of GPSDO generators that can be used. However, I remind you that you must hold a maximum of 1.8Vp-p before C123. LeoBodnard&#8217;s programmable model, set to 36mA should give you 1.6Vdc on 50 ohms, so it is well adapted for that.<\/p>\n<ul>\n<li><a href=\"http:\/\/www.leobodnar.com\/shop\/index.php?main_page=product_info&amp;cPath=107&amp;products_id=301\" target=\"_blank\" rel=\"noopener noreferrer\">Programmable GPSDO from LeoBodnard\u00a0<\/a><\/li>\n<li><a href=\"http:\/\/www.df9np.de\/page3.html\" target=\"_blank\" rel=\"noopener noreferrer\">DF9NP GPSDO 10MHz<\/a><\/li>\n<li>With 3.3V output \u26a0\ufe0f GPSDO BG7TBL (<a href=\"https:\/\/s.click.aliexpress.com\/e\/_dVyk6ba\" target=\"_blank\" rel=\"noopener noreferrer\">Aliexpress<\/a>, <a href=\"https:\/\/rover.ebay.com\/rover\/1\/709-53476-19255-0\/1?mpre=https%3A%2F%2Fwww.ebay.fr%2Fitm%2F10MHz-Sinwave-PLL-GPSDO-GPS-DISCIPLINED-OSCILLATOR-antenna-POWER-supply%2F123875390807%3F_trkparms%3Daid%253D1110004%2526algo%253DSPLICE.COMP%2526ao%253D1%2526asc%253D20200220094952%2526meid%253Df478e2a8313a4263993d94b39f894c03%2526pid%253D100008%2526rk%253D3%2526rkt%253D12%2526sd%253D263458624856%2526itm%253D123875390807%2526pmt%253D1%2526noa%253D0%2526pg%253D2047675%2526algv%253Ddefault%2526brand%253DUnbranded%26_trksid%3Dp2047675.c100008.m2219&amp;campid=5338475756&amp;toolid=20008\" target=\"_blank\" rel=\"noopener noreferrer\">Ebay<\/a>)<\/li>\n<\/ul>\n<p>EA3HMJ proposes to add a switch on the TCXO power supply to allow the choice of the internal (TCXO) or external (GPSDO) source. It is then necessary to unsolder the C122 bracket and to connect it to the switch. Pin 4 of the TCXO is then isolated and can be connected to the switch.<\/p>\n<div id=\"attachment_3385-2\" style=\"width: 402px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/External_clock_switchh_PlutoSDR.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3385-2\" class=\"wp-image-3385\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/External_clock_switchh_PlutoSDR-1280x804.jpg\" alt=\"\" width=\"392\" height=\"247\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/External_clock_switchh_PlutoSDR-1280x804.jpg 1280w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/External_clock_switchh_PlutoSDR-300x188.jpg 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/External_clock_switchh_PlutoSDR-768x482.jpg 768w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/External_clock_switchh_PlutoSDR.jpg 1471w\" sizes=\"auto, (max-width: 392px) 100vw, 392px\" \/><\/a><p id=\"caption-attachment-3385-2\" class=\"wp-caption-text\">TCXO\/GPSDO selector switch<\/p><\/div>\n<div id=\"attachment_3384-2\" style=\"width: 315px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3384-2\" class=\"wp-image-3384\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e92d7f0d8911.png\" alt=\"\" width=\"305\" height=\"409\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e92d7f0d8911.png 512w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e92d7f0d8911-224x300.png 224w\" sizes=\"auto, (max-width: 305px) 100vw, 305px\" \/><p id=\"caption-attachment-3384-2\" class=\"wp-caption-text\">Implementation of EA3HMJ<\/p><\/div>\n<p><!--nextpage--><\/p>\n<h3 class=\"np-title\" data-np-title=\"Adalm Pluto driver installations and optimizations\">The Windows drivers<\/h3>\n<p>It will soon be time to connect the Adalm Pluto to the PC.<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li>Download and install the driver for Windows (<a href=\"https:\/\/wiki.analog.com\/university\/tools\/pluto\/drivers\/windows\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/wiki.analog.com\/university\/tools\/pluto\/drivers\/windows<\/a> or the file <a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/PlutoSDR-M2k-USB-Drivers.zip\">PlutoSDR-M2k-USB-Drivers.zip <\/a>v0.7 file directly from this site).<\/li>\n<li>Now it&#8217;s time to connect the Adalm Pluto for the first time via its central USB socket directly to the computer. A disc drive will appear in your file explorer. It will be named PlutoSDR. LED1 is flashing slowly.<img loading=\"lazy\" decoding=\"async\" width=\"682\" height=\"153\" class=\"alignnone size-full wp-image-3276 \" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/02\/img_5e373454754a7.png\" alt=\"\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/02\/img_5e373454754a7.png 682w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/02\/img_5e373454754a7-300x67.png 300w\" sizes=\"auto, (max-width: 682px) 100vw, 682px\" \/> <a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/PlutoSDR-operation-blink.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3396 size-full alignnone\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/PlutoSDR-operation-blink.gif\" alt=\"\" width=\"207\" height=\"108\" \/><\/a><\/li>\n<li>Double-click on the info.html file. At the bottom of the page, you will find the IP address of your PlutoSDR connected to your USB port. The info.html page is also accessible through the IP address in your browser from the PC on which your Adalm Pluto is connected. Type in the URL of your browser, or click : <a href=\"http:\/\/192.168.2.1\" target=\"_blank\" rel=\"noopener noreferrer\">http:\/\/192.168.2.1<\/a>\n<p id=\"QnMejks\"><img loading=\"lazy\" decoding=\"async\" width=\"368\" height=\"162\" class=\"alignnone size-full wp-image-3397 \" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e936331841d2.png\" alt=\"\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e936331841d2.png 368w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e936331841d2-300x132.png 300w\" sizes=\"auto, (max-width: 368px) 100vw, 368px\" \/><\/p>\n<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<h3>Firmware update<\/h3>\n<p><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9369f4b40c4.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-3401\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9369f4b40c4.png\" alt=\"\" width=\"348\" height=\"119\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9369f4b40c4.png 900w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9369f4b40c4-300x103.png 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9369f4b40c4-768x263.png 768w\" sizes=\"auto, (max-width: 348px) 100vw, 348px\" \/><\/a>We will now implement the official Analog firmware Device\u2122 v0.31. This operation is necessary to then apply the firmware developed by Evariste F5OEO. Check the version in place is not already the last one on the <a href=\"http:\/\/192.168.2.1\" target=\"_blank\" rel=\"noopener noreferrer\">Adalm Pluto information page<\/a>, Build line. If this is the case, go to the next paragraph.<\/p>\n<ol>\n<li>Download the file plutosdr-fw-v0.31.zip on <a href=\"https:\/\/github.com\/analogdevicesinc\/plutosdr-fw\/releases\/latest\">https:\/\/github.com\/analogdevicesinc\/plutosdr-fw\/releases\/latest<\/a> or directly on this website : <a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/plutosdr-fw-v0.31.zip\">plutosdr-fw-v0.31<\/a><\/li>\n<li>Extract the contents of the zip file.\n<p id=\"jjZUlvV\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3403 \" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e936c471cc09.png\" alt=\"\" width=\"321\" height=\"91\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e936c471cc09.png 505w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e936c471cc09-300x85.png 300w\" sizes=\"auto, (max-width: 321px) 100vw, 321px\" \/><\/p>\n<\/li>\n<li>Your Adalm Pluto is plugged in. Copy the file pluto.frm to the root of the PlutoSDR drive<img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3279 \" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/02\/img_5e39cbcb405ad.png\" alt=\"\" width=\"683\" height=\"160\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/02\/img_5e39cbcb405ad.png 841w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/02\/img_5e39cbcb405ad-300x70.png 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/02\/img_5e39cbcb405ad-768x180.png 768w\" sizes=\"auto, (max-width: 683px) 100vw, 683px\" \/><\/li>\n<li>To start programming the firmware, right-click on the PlutoSDR drive, and click Eject.<br \/>\n<img loading=\"lazy\" decoding=\"async\" width=\"368\" height=\"73\" class=\"alignnone size-full wp-image-3280 \" style=\"font-size: 1.5rem;\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/02\/img_5e39cc71ccf88.png\" alt=\"\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/02\/img_5e39cc71ccf88.png 368w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/02\/img_5e39cc71ccf88-300x60.png 300w\" sizes=\"auto, (max-width: 368px) 100vw, 368px\" \/><\/li>\n<li><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/PlutoSDR-operation-firmware-fast-blink.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3406 alignright\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/PlutoSDR-operation-firmware-fast-blink.gif\" alt=\"\" width=\"199\" height=\"102\" \/><\/a>LED1 starts flashing quickly. This will take three to four minutes. Do not interrupt the process as this may damage your equipment.<\/li>\n<li>After updating, the PlutoSDR drive reappears in your browser. You can launch your web browser and access the main page of the Adalm Pluto by <a href=\"http:\/\/192.168.2.1\/\" target=\"_blank\" rel=\"noopener noreferrer\">http:\/\/192.168.2.1\/<\/a><\/li>\n<\/ol>\n<h3 id=\"putty\">Extending the capabilities of Adalm Pluto<\/h3>\n<h4>Increasing the frequency range<\/h4>\n<p>The current version of Pluto uses the AD9363 chip which is &#8220;limited&#8221; to a frequency range of 325 to 3800 MHz and a bandwidth of 20 MHz. However, the AD9364 chip, which can support a frequency range of 70 MHz to 6000 MHz and a bandwidth of 56 MHz, is claimed to be almost identical to the AD9363 chip. The Adalm Pluto can be tricked into seeing an AD9364 chip simply by changing a parameter variable, but there is no guarantee that the full range of frequencies and bandwidth will be given for all devices. It is possible that the AD9363 chips are actually AD9364 chips that have failed performance quality checks and have just been renamed to a low-end model, or that a cheaper semiconductor process is being used with the low-end chip.<\/p>\n<h5 id=\"plutosdrconnect\">Connection to Pluto SDR by terminal<\/h5>\n<p>On the computer on which your Adalm Pluto is connected, we will install terminal emulation software. I use and recommend <a href=\"https:\/\/www.chiark.greenend.org.uk\/~sgtatham\/putty\/\" target=\"_blank\" rel=\"noopener noreferrer\">Putty<\/a>.<\/p>\n<div class=\"level2\">\n<p>Connect with terminal software, indicating the IP address of the PlutoSDR, SSH protocol (port 22).<\/p>\n<p id=\"pjsukql\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3412 \" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9382a21f90f.png\" alt=\"\" width=\"306\" height=\"117\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9382a21f90f.png 387w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9382a21f90f-300x115.png 300w\" sizes=\"auto, (max-width: 306px) 100vw, 306px\" \/><\/p>\n<p>Enter the default login and password.<\/p>\n<pre class=\"lang:default decode:true\">login : root\r\npassword : analog<\/pre>\n<\/div>\n<pre class=\"lang:sh decode:true\">Warning: Permanently added '192.168.2.1' (ECDSA) to the list of known hosts.\r\nroot@192.168.2.1's password: analog\r\nWelcome to:\r\n______ _       _        _________________\r\n| ___ \\ |     | |      \/  ___|  _  \\ ___ \\\r\n| |_\/ \/ |_   _| |_ ___ \\ `--.| | | | |_\/ \/\r\n|  __\/| | | | | __\/ _ \\ `--. \\ | | |    \/\r\n| |   | | |_| | || (_) \/\\__\/ \/ |\/ \/| |\\ \\\r\n\\_|   |_|\\__,_|\\__\\___\/\\____\/|___\/ \\_| \\_|\r\n\r\nv0.31\r\nhttp:\/\/wiki.analog.com\/university\/tools\/pluto\r\n#<\/pre>\n<p>By default, the following two commands should return errors:<\/p>\n<pre class=\"lang:sh decode:true\"># fw_printenv attr_name\r\n## Error: \"attr_name\" not defined\r\n# fw_printenv attr_val\r\n## Error: \"attr_val\" not defined\r\n#<\/pre>\n<p>Pass the two commands and restart the pluto with the third line.<\/p>\n<pre class=\"lang:default decode:true\"># fw_setenv attr_name compatible\r\n# fw_setenv attr_val ad9364\r\n# reboot<\/pre>\n<p>After rebooting and reconnecting to your PlutoSDR, both commands return the saved settings.<\/p>\n<pre class=\"lang:sh decode:true\"># fw_printenv attr_name\r\nattr_name=compatible\r\n# fw_printenv attr_val\r\nattr_val=ad9364\r\n#<\/pre>\n<h4>Enabling the second processor core of the PlutoSDR<\/h4>\n<p>It&#8217;s not sure if it&#8217;s really useful, but maybe for the very large signals of a few mega-symbols ?<\/p>\n<p>The following command returns the characteristics of the processor.<\/p>\n<pre class=\"lang:sh decode:true\">cat \/proc\/cpuinfo<\/pre>\n<p>Still connected with your terminal to the Adalm Pluto, run the command.<\/p>\n<pre class=\"lang:sh decode:true\">fw_setenv maxcpus<\/pre>\n<p>You can run the following command again, the result now shows both CPU cores.<\/p>\n<pre class=\"lang:default decode:true\"># cat \/proc\/cpuinfo\r\nprocessor       : 0\r\nmodel name      : ARMv7 Processor rev 0 (v7l)\r\nBogoMIPS        : 666.66\r\nFeatures        : half thumb fastmult vfp edsp neon vfpv3 tls vfpd32\r\nCPU implementer : 0x41\r\nCPU architecture: 7\r\nCPU variant     : 0x3\r\nCPU part        : 0xc09\r\nCPU revision    : 0\r\n\r\nprocessor       : 1\r\nmodel name      : ARMv7 Processor rev 0 (v7l)\r\nBogoMIPS        : 666.66\r\nFeatures        : half thumb fastmult vfp edsp neon vfpv3 tls vfpd32\r\nCPU implementer : 0x41\r\nCPU architecture: 7\r\nCPU variant     : 0x3\r\nCPU part        : 0xc09\r\nCPU revision    : 0\r\n\r\nHardware        : Xilinx Zynq Platform\r\nRevision        : 0003\r\nSerial          : 0000000000000000\r\n#\r\n<\/pre>\n<p><!--nextpage--><\/p>\n<h2 class=\"np-title np-added\">F5OEO PlutoDVB firmware installation<\/h2>\n<p>Evariste F5OEO has developed a whole series of SDR processing software. The first ones were dedicated to the LimeSDR transceiver. For the PlutoSDR, Evariste proposes directly a firmware to be installed on the equipment : PlutoDVB.\u00a0 The firmware integrates a DATV image transmitter, but also other possibilities: a narrowband SSB transmitter, a narrowband SSTV transmitter, a narrowband FREEDV digital modulator, and a modulator to draw images on the SDR waterfall.<\/p>\n<p>I will develop here only the digital video modulator function of the firmware.<\/p>\n<h3>Download PlutoDVB F5OEO firmware<\/h3>\n<p>To date, Evariste has released several versions of firmware :<\/p>\n<ul>\n<li>The &#8220;stable&#8221; firmware version\n<ul>\n<li><a href=\"http:\/\/www.vivadatv.org\/viewtopic.php?f=60&amp;t=692\" target=\"_blank\" rel=\"noopener noreferrer\">On the forum VivaDATV.org<\/a> (Registration required on the forum dedicated to DATV and mini-DATV receivers &#8211; This is a mine of very useful information for the DATV, I urge you to register.)<\/li>\n<li>On the current site : <a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/pluto.frm_.20191010.zip\">pluto.frm.20191010.zip<\/a><\/li>\n<\/ul>\n<\/li>\n<li>Le firmware &#8220;beta&#8221;\n<ul>\n<li>On <a href=\"http:\/\/qra.f5oeo.fr:2080\/pluto.frm\">firmware.hackhamradio.com\/pluto.frm<\/a><\/li>\n<li>On the current site : <a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/pluto-20191220-1058.zip\">pluto 20191220-1058.zip<\/a><\/li>\n<\/ul>\n<\/li>\n<li>The beta firmware &#8220;for the brave&#8221;.\n<ul>\n<li>On <a href=\"http:\/\/qra.f5oeo.fr:2080\/beta_for_the_brave\/pluto.frm\">firmware.hackhamradio.com\/beta_for_the_brave\/pluto.frm<\/a><\/li>\n<li>On the current site : <a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/pluto-beta_for_the_brave-20200205-2104.zip\">pluto beta_for_the_brave 20200205-2104.zip<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>Like many others, I use the latest version called &#8220;for the brave&#8221;. It works well. The following explanations are based on this version.<\/p>\n<h3>Installing the firmware of Evariste F5OEO<\/h3>\n<ol>\n<li>Download the frm file or unzip the contents of one of the zip files. The file pluto.frm is the firmware.<\/li>\n<li>Install the firmware by following the steps as described previously.<\/li>\n<li>After updating the firmware, the PlutoSDR drive reappears in your browser. You can launch your internet browser and access the main page of Pluto_DVB installed on the Adalm Pluto by <a href=\"http:\/\/192.168.2.1\/\" target=\"_blank\" rel=\"noopener noreferrer\">http:\/\/192.168.2.1\/<\/a>\n<p id=\"bRyqDvY\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3282 \" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/02\/img_5e39cfa69c257.png\" alt=\"\" width=\"857\" height=\"347\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/02\/img_5e39cfa69c257.png 1035w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/02\/img_5e39cfa69c257-300x121.png 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/02\/img_5e39cfa69c257-768x311.png 768w\" sizes=\"auto, (max-width: 857px) 100vw, 857px\" \/><\/p>\n<\/li>\n<\/ol>\n<h3>Accessing Pluto SDR remotely via network<\/h3>\n<p><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/OTG-micro-USB-LAN-adapter-PlutoSDR.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-3436 size-medium\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/OTG-micro-USB-LAN-adapter-PlutoSDR-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/OTG-micro-USB-LAN-adapter-PlutoSDR-300x300.jpg 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/OTG-micro-USB-LAN-adapter-PlutoSDR-200x200.jpg 200w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/OTG-micro-USB-LAN-adapter-PlutoSDR-768x768.jpg 768w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/OTG-micro-USB-LAN-adapter-PlutoSDR.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>This operation is not required per se. As you can see, when the Adalm Pluto is connected via USB, the device is identified by an IP network address 192.168.2.1. To allow remote access to the PlutoSDR through your Ethernet LAN, we need to place a USB\/Ethernet adapter. This will allow you to transmit your DATV images from a remote computer connected to your local network. As indicated by <a href=\"https:\/\/wiki.analog.com\/university\/tools\/pluto\/usb_otg_host_function_support\" target=\"_blank\" rel=\"noopener noreferrer\">Analog Device\u2122<\/a>, multiple adapters may work. I have installed the following one and it works for me.<\/p>\n<ul>\n<li>USB \/ Ethernet adapter with a mini USB OTG Y cable &#8211; 100 MBit\/s is sufficient\n<ul>\n<li><a href=\"https:\/\/s.click.aliexpress.com\/e\/_dWgoxVI\" target=\"_blank\" rel=\"noopener noreferrer\">Link to Aliexpress<\/a><\/li>\n<li><a href=\"https:\/\/ebay.us\/Qhgwd6\" target=\"_blank\" rel=\"noopener noreferrer\">Link to Ebay<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>Normally your PlutoSDR, once connected as shown in the diagram on the right, should automatically have an IP address given by your network router (router, or internet box). In my case, this was not the case. For with a fixed IP address, which does not change, I therefore modified the file which is on in the root directory of the PlutoSDR drive in the <em>config.txt<\/em> file.<\/p>\n<p id=\"kCHtbxG\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3434 \" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9b1b0326b07.png\" alt=\"\" width=\"275\" height=\"341\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9b1b0326b07.png 335w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9b1b0326b07-242x300.png 242w\" sizes=\"auto, (max-width: 275px) 100vw, 275px\" \/><\/p>\n<ul>\n<li>Open the <em>config.txt<\/em> file<\/li>\n<li>After the line <em>[USB_ETHERNET]<\/em>, change the IP address by entering a free IP address from your network. I advise you to use the <a href=\"https:\/\/www.advanced-ip-scanner.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">IP Advanced Scanner<\/a> which allows you to list all the devices connected on your network (and find your Adalm Pluto on the network, under the hostname pluto). Your Pluto will have this fixed IP address at the next reboot. In my case, the chosen address is 192.168.1.8. It will appear in the rest of the article, and you will of course replace it with the IP address you programmed.<\/li>\n<\/ul>\n<p>Do not change the address of the NETWORK section but only the address of the USB_ETHERNET section.<\/p>\n<pre class=\"\">ipaddr_eth = 192.168.1.8<\/pre>\n<pre class=\"lang:default decode:true\"># Analog Devices PlutoSDR Rev.B (Z7010-AD9363)\r\n# Device Configuration File\r\n#   1. Open with an Editor\r\n#   2. Edit this file\r\n#   3. Save this file on the device USB drive\r\n#   4. Eject the device USB Drive\r\n# Doc: https:\/\/wiki.analog.com\/university\/tools\/pluto\/users\/customizing\r\n\r\n[NETWORK]\r\nhostname = pluto\r\nipaddr = 192.168.2.1\r\nipaddr_host = 192.168.2.10\r\nnetmask = 255.255.255.0\r\n\r\n[WLAN]\r\nssid_wlan = \r\npwd_wlan = \r\nipaddr_wlan = \r\n\r\n[USB_ETHERNET]\r\nipaddr_eth = 192.168.1.8\r\nnetmask_eth = 255.255.255.0\r\ngateway_eth = 192.168.0.254\r\n\r\n[SYSTEM]\r\nxo_correction = \r\nudc_handle_suspend = 0\r\n\r\n[ACTIONS]\r\ndiagnostic_report = 0\r\ndfu = 0\r\nreset = 0\r\ncalibrate = 0\r\n\r\n<\/pre>\n<p><!--nextpage--><\/p>\n<h2 class=\"np-title np-added\">The video broadcast software OBS Studio<\/h2>\n<div id=\"attachment_3440-2\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/OBS-Studio-DATV-PlutoDVB-F5UII.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3440-2\" class=\"size-medium wp-image-3440\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/OBS-Studio-DATV-PlutoDVB-F5UII-300x163.jpg\" alt=\"\" width=\"300\" height=\"163\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/OBS-Studio-DATV-PlutoDVB-F5UII-300x163.jpg 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/OBS-Studio-DATV-PlutoDVB-F5UII-768x417.jpg 768w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/OBS-Studio-DATV-PlutoDVB-F5UII-1280x695.jpg 1280w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/OBS-Studio-DATV-PlutoDVB-F5UII.jpg 1920w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-3440-2\" class=\"wp-caption-text\">OBS Studio<\/p><\/div>\n<p>We need to send a video stream to the PlutoDVB integrated server. It is possible, for example, to stream an image directly from a smartphone with the <a href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.wmspanel.larix_broadcaster&amp;hl=fr\">Larix Broadcaster<\/a>\u00a0software. I don&#8217;t develop this support, but if you are interested, you can find an example of configuration on the PlutoDVB integrated help page (in the Phone section). It seems much more interesting to me to present the software I prefer to use to transmit my DATV images: OBS Studio.<\/p>\n<p>OBS Studio (Open Broadcaster Software) is a free open source software that allows to compose video images, and to broadcast them to internet platforms like Youtube or twitch for example. It is often used by gamers who broadcast their game live.<\/p>\n<p>This software is really flexible with an intuitive interface and allows you to compose your images, with multiple video sources (webcam, internet), audio, still images, scrolling texts&#8230; filters allow you to process, modify the video and audio, transitions allow you to switch from one composition (scenes such as the software calls them) to another. Plugins allow to add interesting functions. \u00a0The only limit I see will be your inspiration.<\/p>\n<h3>Our first test pattern in OBS Studio<\/h3>\n<p>To familiarize ourselves with the software, and after having installed OBS Studio, we will build our first Scene, to broadcast a customized TV test pattern. Let&#8217;s see it step by step.<\/p>\n<ol>\n<li>Download and install <a href=\"https:\/\/obsproject.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">OBS Studio<\/a><\/li>\n<li>Launch the software for the first time. Answer No to the Auto-configuration question. Your installation is initialized with a default profile, in which an empty scene is placed.<\/li>\n<li>The first thing to do is to adjust the definition of your broadcast screen. Click on the File \/ Settings menu. Go to the Video screen, and set your basic resolution, and output resolution (the same as above). Broadcasts and screens are now largely in 16:9 format. Validate by OK\n<p id=\"asjfAVF\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3454 \" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c0b61be53f.png\" alt=\"\" width=\"925\" height=\"370\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c0b61be53f.png 984w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c0b61be53f-300x120.png 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c0b61be53f-768x307.png 768w\" sizes=\"auto, (max-width: 925px) 100vw, 925px\" \/><\/p>\n<\/li>\n<li>We&#8217;re going to rename the first Scene to &#8220;Mire&#8221; (french for TV-Pattern) so that we&#8217;ll be able to find our way around when we have more Scenes added. Right click on the scene, choose Rename. I&#8217;m entering &#8220;Mire&#8221; (Pattern).<\/li>\n<li>Now let&#8217;s add an image to the Scene, by clicking on the plus sign and choosing the Image source.<img loading=\"lazy\" decoding=\"async\" width=\"387\" height=\"192\" class=\"size-full wp-image-3457 alignnone\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c0ef7684af.png\" alt=\"\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c0ef7684af.png 387w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c0ef7684af-300x149.png 300w\" sizes=\"auto, (max-width: 387px) 100vw, 387px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-3446 alignnone\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9b5eaeafad6-164x300.png\" alt=\"\" width=\"164\" height=\"300\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9b5eaeafad6-164x300.png 164w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9b5eaeafad6.png 196w\" sizes=\"auto, (max-width: 164px) 100vw, 164px\" \/><\/li>\n<li>Name your image &#8220;Mire TV&#8221;. Click OK<a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9b5eee20737.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-3447\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9b5eee20737-300x98.png\" alt=\"\" width=\"300\" height=\"98\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9b5eee20737-300x98.png 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9b5eee20737.png 360w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/li>\n<li>\n<p id=\"zXZHrfL\">Select your image. You can download the file <a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/Mire-TV.jpg\" target=\"_blank\" rel=\"noopener noreferrer\">Mire-TV.jpg<\/a>. Click OK. <a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9b5fc4616ac.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-3448\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9b5fc4616ac-300x257.png\" alt=\"\" width=\"300\" height=\"257\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9b5fc4616ac-300x257.png 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9b5fc4616ac.png 718w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<\/li>\n<li>Using the red handles, resize the image to the width of the scene. When the final position is found, lock its position by clicking on the padlock of the TV test pattern source. This will avoid moving the image inadvertently afterwards.\n<p id=\"CZkOwNn\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3459 \" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c12168cb4c.png\" alt=\"\" width=\"488\" height=\"363\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c12168cb4c.png 1065w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c12168cb4c-300x223.png 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c12168cb4c-768x572.png 768w\" sizes=\"auto, (max-width: 488px) 100vw, 488px\" \/><\/p>\n<\/li>\n<li>We&#8217;re now going to add your call sign to the pattern. With a click on the plus, add a Text(GDI+) source. Proceed as in the first case, to name the source. In the properties window, you can define a font, the color of your choice. Enter your callsign in the Text field. Click OK. The text is added to your scene.<\/li>\n<li>Take care that in the list of sources, your text is well listed above the background image. Indeed, the order of the sources defines the overlay layers in the scene. Resize your text.<\/li>\n<li>We still have to add sound to the pattern. You will now choose a Media source, and name it Background Music for example. Accepted audio formats are mp3, acc, ogg and wav. In the properties of the source, remember to check Loop so that the music keeps restarting. I invite you to check the license conditions of your audio sources before integrating them into your broadcasts. Here are a few platforms that you can use to find your music.\n<ol>\n<li><a href=\"https:\/\/www.freemusicarchive.org\/\" target=\"_blank\" rel=\"noopener noreferrer\">freemusicarchive.org<\/a><\/li>\n<li><a href=\"https:\/\/www.bensound.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">bensound.com<\/a><\/li>\n<li><a href=\"https:\/\/www.free-stock-music.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">free-stock-music.com<\/a><\/li>\n<\/ol>\n<\/li>\n<li><img loading=\"lazy\" decoding=\"async\" class=\" alignright wp-image-3468 size-medium\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c51b5bfc9a-300x224.png\" alt=\"\" width=\"300\" height=\"224\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c51b5bfc9a-300x224.png 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c51b5bfc9a-768x574.png 768w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c51b5bfc9a.png 1063w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>Your first static TV pattern scene is complete. You will quickly understand that you can add other scenes with sources that can be a USB camera, or a network camera. The sources to use are &#8216;Video capture device&#8217;. You will also be able to make captures of your applications, or of your desktop directly thanks to the source &#8216;Window Capture&#8217; or the source &#8216;Screen Capture&#8217;. For audio, to add a microphone, you will use the &#8216;Audio Capture (input)&#8217; source.<\/li>\n<li>Following the same principle, you add another composition, another scene, for example to integrate a webcam connected to your PC :\n<ol>\n<li>Click on the + at the bottom of the Scenes column. Give a name to the new Scene<\/li>\n<li>Click on the + at the bottom of the Sources column. Choose &#8220;Video capture device&#8221;, then choose your connected video source\n<p id=\"SMGQSUc\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3479 \" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea5423ce9626.png\" alt=\"\" width=\"215\" height=\"209\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea5423ce9626.png 351w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea5423ce9626-300x291.png 300w\" sizes=\"auto, (max-width: 215px) 100vw, 215px\" \/><\/p>\n<\/li>\n<li>You can also integrate in the scene a network image source (Media Source), for example the one of the broadcast made by your DATV reception (Minitiouner for example). Uncheck Local file, and enter the source IP address for example udp:\/\/@230.0.0.10:10001. You can also use a smartphone equipped with a camera to stream your video. Under Android, I use the software <a href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.dev47apps.droidcam\" target=\"_blank\" rel=\"noopener noreferrer\">Droidcam<\/a> or <a href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.pas.webcam\" target=\"_blank\" rel=\"noopener noreferrer\">IP Webcam<\/a>.\n<p id=\"VyFNJIp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3480 \" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea54c2d3a5fc.png\" alt=\"\" width=\"482\" height=\"409\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea54c2d3a5fc.png 720w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea54c2d3a5fc-300x255.png 300w\" sizes=\"auto, (max-width: 482px) 100vw, 482px\" \/><\/p>\n<\/li>\n<\/ol>\n<\/li>\n<li>I invite you to switch to the &#8220;Studio Mode&#8221; view (via the bottom right control button).On the right is displayed the image sent (streamed), and on the left, the scene you are ready to send.<\/li>\n<li>To switch from one scene to another, select the scene to be transmitted, then click on one of the &#8220;Transition&#8221; buttons positioned between the two images. You will choose one of the available transitions (Cut, fade, scan &#8230;). The transitions are configurable in duration and rendering with the <em>Scene Transitions \/ Priorities<\/em> panel, or by adding a transition with the + button. <img loading=\"lazy\" decoding=\"async\" width=\"422\" height=\"138\" class=\"alignnone size-full wp-image-3482 \" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea570e70fb8f.png\" alt=\"\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea570e70fb8f.png 422w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea570e70fb8f-300x98.png 300w\" sizes=\"auto, (max-width: 422px) 100vw, 422px\" \/>\n<p id=\"wNRVUKb\"><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/OBS-transition-Scenes.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3502 aligncenter\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/OBS-transition-Scenes.gif\" alt=\"\" width=\"515\" height=\"438\" \/><\/a><\/p>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><!--nextpage--><\/p>\n<h2 class=\"np-title np-added\">Streaming the OBS Studio video\/audio stream to PlutoDVB &#8211; The DATV settings<\/h2>\n<p>Now that we have some matter to broadcast, let&#8217;s see the settings expected by the Adalm Pluto and PlutoDVB. It integrates an RTMP server (Real-Time Messaging Protocol) which will receive the video stream sent by OBS Studio. It is mainly this server and the very simple way to broadcast the stream to the PlutoDVB that makes all its interest. The easy implementation of Evariste F5OEO&#8217;s firmware lies in the simplicity of a &#8220;line of parameters&#8221; sent from OBS to the Adalm Pluto. Let us see that in detail.<\/p>\n<h3>Video stream generation<\/h3>\n<ol>\n<li>In the OBS settings (File\/Settings), we will indicate the destination of PlutoSDR: In the Stream tab, choose the &#8220;Custom&#8230;&#8221; service.<\/li>\n<li>In the field &#8220;Stream key&#8221;, in the second line, indicate your callsign with 2 commas. In the first line Server, the RTMP server integrated in the Adalm Pluto will be indicated, as well as all the characteristics of the DATV transmission. Be careful not to forget one of the separating commas. Here is an example.\n<p id=\"qoalFtq\"><img loading=\"lazy\" decoding=\"async\" width=\"812\" height=\"546\" class=\"alignnone size-full wp-image-3462 \" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c4306e6452.png\" alt=\"\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c4306e6452.png 812w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c4306e6452-300x202.png 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c4306e6452-768x516.png 768w\" sizes=\"auto, (max-width: 812px) 100vw, 812px\" \/><\/p>\n<\/li>\n<li>Now let&#8217;s detail the parameters that constitute the line.<br \/>\n<a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/Parameters-PlutoDVB-EN.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-3467 size-full\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/Parameters-PlutoDVB-EN.jpg\" alt=\"\" width=\"1000\" height=\"378\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/Parameters-PlutoDVB-EN.jpg 1000w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/Parameters-PlutoDVB-EN-300x113.jpg 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/Parameters-PlutoDVB-EN-768x290.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/a><\/li>\n<\/ol>\n<ol>\n<li>The IP address is that of your Pluto. Connected in USB it is 192.168.2.1. If your Pluto is connected to the network, this is of course the IP address of your PlutoSDR on the network. Port 7272 is the default value to be used to transmit the video stream.<\/li>\n<li>The transmission frequency must be chosen in correlation with the bandwidth map of the Qatar Oscar 100 satellite&#8217;s wideband transponder and depends on the spectrum occupation and the Symbol Rate width you will be using. On <a href=\"http:\/\/eshail.batc.org.uk\/wb\" target=\"_blank\" rel=\"noopener noreferrer\">the webSDR of the BATC eshail.batc.org.uk\/wb<\/a> a free channel is chosen and priority is given to the free narrowband portion. Refer to the rules specified in the chapter &#8216;<a href=\"https:\/\/www.f5uii.net\/en\/transmit-datv-over-qo100-with-sdr-adalm-pluto-f5oeo-plutodvb\/9\/\">QO-100 wideband operating guidelines and bandplan<\/a>&#8216;.\n<p><div id=\"attachment_4249-2\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/QO100-channel.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-4249-2\" class=\"wp-image-4249 size-medium\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/QO100-channel-300x226.png\" alt=\"\" width=\"300\" height=\"226\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/QO100-channel-300x226.png 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/QO100-channel.png 597w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-4249-2\" class=\"wp-caption-text\">Select a free frequency<\/p><\/div><\/li>\n<li>The mode (usually DVB-S2).<\/li>\n<li>The phase modulation constellation. For DVBS mode, only the QPSK constellation is possible.<br \/>\n<a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/QPSK-8PSK-16APSK.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-3474\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/QPSK-8PSK-16APSK-300x127.jpg\" alt=\"\" width=\"269\" height=\"114\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/QPSK-8PSK-16APSK-300x127.jpg 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/QPSK-8PSK-16APSK.jpg 311w\" sizes=\"auto, (max-width: 269px) 100vw, 269px\" \/><\/a><\/li>\n<li>The SR is the symbol rate of the transmission. The SR is the main variable that determines the frequency bandwidth of your signal. Pluto DVB accepts from 33 to 2000 kS.<\/li>\n<li>FEC stands for Forward Correction Error. The FEC is a data ratio between the useful data (image, sound) and the data added to the transmission, which are used to a certain extent and according to the criteria of plausibility, to correct errors during decoding, errors caused by the hazards of the transmission. At the time of transmission, data are introduced which enable the receiver to reconstitute the useful information which would have been lost. The FEC can thus take values such as 14 for 1\/4, 13=1\/3, 25=2\/5, 12=1\/2, 35=3\/5, 23=2\/3, 34=3\/4, 45=4\/5, 56=5\/6, 89=8\/9, 910=9\/10. This is the number of useful bits for the number of transmitted bits, for example: 3\/5 corresponds to 3 useful bits for 5 transmitted bits, i.e. 2 used for correction.<\/li>\n<li>Gain is expressed in dBm, the maximum transmit signal is reached by setting the value to 0.<\/li>\n<li>The emission calibration (a maximum amplitude peak) can be generated with the calib value. (first of the optional parameters &#8211; not tested by me)<\/li>\n<li>The PCR\/PTS delay can be increased if the encoding suffers from a lack of bitrate. We will come back to this in more detail. (optional parameter)<\/li>\n<li>The audio streaming rate can be limited by PlutoDVB (optional parameter). OBS Studio can only broadcast a minimum of 64 kbit\/s of audio. It can therefore be interesting to switch to 32kbit\/s and to make the video or correction stream benefit from this increased rate.<\/li>\n<\/ol>\n<h3>TS stream to PlutoDVB &#8211; Video bitrate<\/h3>\n<p>We will now tell OBS Studio the data rate we will send to PlutoDVB (the TS, Transport Stream), the definition of the transmitted image, and the compression encoding of the video stream.<\/p>\n<h3>Video bit rate<\/h3>\n<p>We will fill the TS (Video Transport Channel &#8211; Transport Stream) at a &#8220;Fixed Sample Rate&#8221; (CBR Constant Bit Rate). The CBR is calculated and depends on the mode (DVB_S, DVB_S2), the chosen constellation (QPSK, 8PSK&#8230;), the chosen symbol rate (which itself with the rolloff coefficient, defines the RF bandwidth occupied by your signal).<\/p>\n<p>Calculators are available for calculating the flow rate. I quote here two online flow rate calculators.<\/p>\n<div id=\"attachment_3500-2\" style=\"width: 236px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea9cd19ae49b.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3500-2\" class=\"wp-image-3500 \" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea9cd19ae49b-261x300.png\" alt=\"\" width=\"226\" height=\"260\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea9cd19ae49b-261x300.png 261w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea9cd19ae49b.png 755w\" sizes=\"auto, (max-width: 226px) 100vw, 226px\" \/><\/a><p id=\"caption-attachment-3500-2\" class=\"wp-caption-text\">Calculation on Satbroadcasts.com<\/p><\/div>\n<ul>\n<li>On <a href=\"https:\/\/roks-tv.com\/pages\/dvb_s2\" target=\"_blank\" rel=\"noopener noreferrer\">Roks-tv.com<\/a><\/li>\n<li>On <a href=\"http:\/\/www.satbroadcasts.com\/DVB-S_Bitrate_and_Bandwidth_Calculator.html\" target=\"_blank\" rel=\"noopener noreferrer\">Satbroadcasts.com<\/a><\/li>\n<\/ul>\n<div id=\"attachment_3499-2\" style=\"width: 263px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea9ccc8e1608.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3499-2\" class=\"wp-image-3499 \" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea9ccc8e1608-300x211.png\" alt=\"\" width=\"253\" height=\"178\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea9ccc8e1608-300x211.png 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea9ccc8e1608-768x541.png 768w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5ea9ccc8e1608.png 1050w\" sizes=\"auto, (max-width: 253px) 100vw, 253px\" \/><\/a><p id=\"caption-attachment-3499-2\" class=\"wp-caption-text\">Calculation on roks-tv.com<\/p><\/div>\n<p>For a &#8220;classic&#8221; DVB-S2 \/QPSK transmission, in these tools, choose the constellation (QPSK), indicate that it is DVB-S2, and enter your choice of SymbolRate &#8220;width&#8221; (333 for example), and choose the FEC. This gives you the Netto TS bitrate value (Netto TS bitrate, or Netto data rate).<\/p>\n<p>This total net bit rate value includes video, audio and also some other DVB &#8220;control&#8221; data (PMT &#8211; Program Map Table, PAT &#8211; Program Association Table, SDT &#8211; Service Description Table). Of course the largest data is of course the video itself.<\/p>\n<p>To determine the video bit rate (VBR), we take between <strong>60 and 70% of the net bit rate<\/strong>. The most important first step is that the bit rate is not too high. In the following table, you will find in the CBR column, the video bitrate values that I use myself (with the PTR\/PTS delay buffer of 800, the default value used by PlutoDVB, and with forcing the audio bitrate to 32 kbps last parameter of the Stream line).<\/p>\n<p>The table gives you the bit rates for a DVB-S2 signal in QPSK. The following pages of the table show the upper SRs.<\/p>\n<p><span id=\"FEC-table\" style=\"font-size: 1.5rem;\">\n<table id=\"tablepress-11-no-2\" class=\"tablepress tablepress-id-11\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">FEC<\/th><th class=\"column-2\">SymbolRate (kS\/s)<\/th><th class=\"column-3\">Brut data rate<\/th><th class=\"column-4\">Netto data rate<\/th><th class=\"column-5\">OBS CBR (kbps)<\/th><th class=\"column-6\">Mini MER RX<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">extremely high (1\/4)<\/td><td class=\"column-2\">125<\/td><td class=\"column-3\">250<\/td><td class=\"column-4\">61<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">-2.35<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">very high (1\/3)<\/td><td class=\"column-2\">125<\/td><td class=\"column-3\">250<\/td><td class=\"column-4\">81<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">-1.24<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">very high (2\/5)<\/td><td class=\"column-2\">125<\/td><td class=\"column-3\">250<\/td><td class=\"column-4\">98<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">-0.3<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">highest (1\/2)<\/td><td class=\"column-2\">125<\/td><td class=\"column-3\">250<\/td><td class=\"column-4\">123<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">1<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\">highest (3\/5)<\/td><td class=\"column-2\">125<\/td><td class=\"column-3\">250<\/td><td class=\"column-4\">148<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">2.23<\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\">normal (2\/3)<\/td><td class=\"column-2\">125<\/td><td class=\"column-3\">250<\/td><td class=\"column-4\">166<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">3.1<\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\">adequate (3\/4)<\/td><td class=\"column-2\">125<\/td><td class=\"column-3\">250<\/td><td class=\"column-4\">185<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">4.03<\/td>\n<\/tr>\n<tr class=\"row-9\">\n\t<td class=\"column-1\">acceptable (4\/5)<\/td><td class=\"column-2\">125<\/td><td class=\"column-3\">250<\/td><td class=\"column-4\">198<\/td><td class=\"column-5\">72<\/td><td class=\"column-6\">4.68<\/td>\n<\/tr>\n<tr class=\"row-10\">\n\t<td class=\"column-1\">low (5\/6)<\/td><td class=\"column-2\">125<\/td><td class=\"column-3\">250<\/td><td class=\"column-4\">206<\/td><td class=\"column-5\">78<\/td><td class=\"column-6\">5.18<\/td>\n<\/tr>\n<tr class=\"row-11\">\n\t<td class=\"column-1\">very low (8\/9)<\/td><td class=\"column-2\">125<\/td><td class=\"column-3\">250<\/td><td class=\"column-4\">221<\/td><td class=\"column-5\">90<\/td><td class=\"column-6\">6.2<\/td>\n<\/tr>\n<tr class=\"row-12\">\n\t<td class=\"column-1\">very low (9\/10)<\/td><td class=\"column-2\">125<\/td><td class=\"column-3\">250<\/td><td class=\"column-4\">223<\/td><td class=\"column-5\">95<\/td><td class=\"column-6\">6.42<\/td>\n<\/tr>\n<tr class=\"row-13\">\n\t<td class=\"column-1\">extremely high (1\/4)<\/td><td class=\"column-2\">250<\/td><td class=\"column-3\">500<\/td><td class=\"column-4\">122<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">-2.35<\/td>\n<\/tr>\n<tr class=\"row-14\">\n\t<td class=\"column-1\">very high (1\/3)<\/td><td class=\"column-2\">250<\/td><td class=\"column-3\">500<\/td><td class=\"column-4\">162<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">-1.24<\/td>\n<\/tr>\n<tr class=\"row-15\">\n\t<td class=\"column-1\">very high (2\/5)<\/td><td class=\"column-2\">250<\/td><td class=\"column-3\">500<\/td><td class=\"column-4\">197<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">-0.3<\/td>\n<\/tr>\n<tr class=\"row-16\">\n\t<td class=\"column-1\">highest (1\/2)<\/td><td class=\"column-2\">250<\/td><td class=\"column-3\">500<\/td><td class=\"column-4\">247<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">1<\/td>\n<\/tr>\n<tr class=\"row-17\">\n\t<td class=\"column-1\">highest (3\/5)<\/td><td class=\"column-2\">250<\/td><td class=\"column-3\">500<\/td><td class=\"column-4\">297<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">2.23<\/td>\n<\/tr>\n<tr class=\"row-18\">\n\t<td class=\"column-1\">normal (2\/3)<\/td><td class=\"column-2\">250<\/td><td class=\"column-3\">500<\/td><td class=\"column-4\">332<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">3.1<\/td>\n<\/tr>\n<tr class=\"row-19\">\n\t<td class=\"column-1\">adequate (3\/4)<\/td><td class=\"column-2\">250<\/td><td class=\"column-3\">500<\/td><td class=\"column-4\">371<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">4.03<\/td>\n<\/tr>\n<tr class=\"row-20\">\n\t<td class=\"column-1\">acceptable (4\/5)<\/td><td class=\"column-2\">250<\/td><td class=\"column-3\">500<\/td><td class=\"column-4\">396<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">4.68<\/td>\n<\/tr>\n<tr class=\"row-21\">\n\t<td class=\"column-1\">low (5\/6)<\/td><td class=\"column-2\">250<\/td><td class=\"column-3\">500<\/td><td class=\"column-4\">412<\/td><td class=\"column-5\">280<\/td><td class=\"column-6\">5.18<\/td>\n<\/tr>\n<tr class=\"row-22\">\n\t<td class=\"column-1\">very low (8\/9)<\/td><td class=\"column-2\">250<\/td><td class=\"column-3\">500<\/td><td class=\"column-4\">442<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">6.2<\/td>\n<\/tr>\n<tr class=\"row-23\">\n\t<td class=\"column-1\">very low (9\/10)<\/td><td class=\"column-2\">250<\/td><td class=\"column-3\">500<\/td><td class=\"column-4\">447<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">6.42<\/td>\n<\/tr>\n<tr class=\"row-24\">\n\t<td class=\"column-1\">extremely high (1\/4)<\/td><td class=\"column-2\">333<\/td><td class=\"column-3\">666<\/td><td class=\"column-4\">163<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">-2.35<\/td>\n<\/tr>\n<tr class=\"row-25\">\n\t<td class=\"column-1\">very high (1\/3)<\/td><td class=\"column-2\">333<\/td><td class=\"column-3\">666<\/td><td class=\"column-4\">216<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">-1.24<\/td>\n<\/tr>\n<tr class=\"row-26\">\n\t<td class=\"column-1\">very high (2\/5)<\/td><td class=\"column-2\">333<\/td><td class=\"column-3\">666<\/td><td class=\"column-4\">262<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">-0.3<\/td>\n<\/tr>\n<tr class=\"row-27\">\n\t<td class=\"column-1\">highest (1\/2)<\/td><td class=\"column-2\">333<\/td><td class=\"column-3\">666<\/td><td class=\"column-4\">329<\/td><td class=\"column-5\">210<\/td><td class=\"column-6\">1<\/td>\n<\/tr>\n<tr class=\"row-28\">\n\t<td class=\"column-1\">highest (3\/5)<\/td><td class=\"column-2\">333<\/td><td class=\"column-3\">666<\/td><td class=\"column-4\">395<\/td><td class=\"column-5\">270<\/td><td class=\"column-6\">2.23<\/td>\n<\/tr>\n<tr class=\"row-29\">\n\t<td class=\"column-1\">normal (2\/3)<\/td><td class=\"column-2\">333<\/td><td class=\"column-3\">666<\/td><td class=\"column-4\">442<\/td><td class=\"column-5\">320<\/td><td class=\"column-6\">3.1<\/td>\n<\/tr>\n<tr class=\"row-30\">\n\t<td class=\"column-1\">adequate (3\/4)<\/td><td class=\"column-2\">333<\/td><td class=\"column-3\">666<\/td><td class=\"column-4\">495<\/td><td class=\"column-5\">380<\/td><td class=\"column-6\">4.03<\/td>\n<\/tr>\n<tr class=\"row-31\">\n\t<td class=\"column-1\">acceptable (4\/5)<\/td><td class=\"column-2\">333<\/td><td class=\"column-3\">666<\/td><td class=\"column-4\">528<\/td><td class=\"column-5\">410<\/td><td class=\"column-6\">4.68<\/td>\n<\/tr>\n<tr class=\"row-32\">\n\t<td class=\"column-1\">low (5\/6)<\/td><td class=\"column-2\">333<\/td><td class=\"column-3\">666<\/td><td class=\"column-4\">548<\/td><td class=\"column-5\">430<\/td><td class=\"column-6\">5.18<\/td>\n<\/tr>\n<tr class=\"row-33\">\n\t<td class=\"column-1\">very low (8\/9)<\/td><td class=\"column-2\">333<\/td><td class=\"column-3\">666<\/td><td class=\"column-4\">588<\/td><td class=\"column-5\">465<\/td><td class=\"column-6\">6.2<\/td>\n<\/tr>\n<tr class=\"row-34\">\n\t<td class=\"column-1\">very low (9\/10)<\/td><td class=\"column-2\">333<\/td><td class=\"column-3\">666<\/td><td class=\"column-4\">595<\/td><td class=\"column-5\">470<\/td><td class=\"column-6\">6.42<\/td>\n<\/tr>\n<tr class=\"row-35\">\n\t<td class=\"column-1\">extremely high (1\/4)<\/td><td class=\"column-2\">500<\/td><td class=\"column-3\">1000<\/td><td class=\"column-4\">245<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">-2.35<\/td>\n<\/tr>\n<tr class=\"row-36\">\n\t<td class=\"column-1\">very high (1\/3)<\/td><td class=\"column-2\">500<\/td><td class=\"column-3\">1000<\/td><td class=\"column-4\">324<\/td><td class=\"column-5\">210<\/td><td class=\"column-6\">-1.24<\/td>\n<\/tr>\n<tr class=\"row-37\">\n\t<td class=\"column-1\">very high (2\/5)<\/td><td class=\"column-2\">500<\/td><td class=\"column-3\">1000<\/td><td class=\"column-4\">394<\/td><td class=\"column-5\">270<\/td><td class=\"column-6\">-0.3<\/td>\n<\/tr>\n<tr class=\"row-38\">\n\t<td class=\"column-1\">highest (1\/2)<\/td><td class=\"column-2\">500<\/td><td class=\"column-3\">1000<\/td><td class=\"column-4\">494<\/td><td class=\"column-5\">370<\/td><td class=\"column-6\">1<\/td>\n<\/tr>\n<tr class=\"row-39\">\n\t<td class=\"column-1\">highest (3\/5)<\/td><td class=\"column-2\">500<\/td><td class=\"column-3\">1000<\/td><td class=\"column-4\">594<\/td><td class=\"column-5\">475<\/td><td class=\"column-6\">2.23<\/td>\n<\/tr>\n<tr class=\"row-40\">\n\t<td class=\"column-1\">normal (2\/3)<\/td><td class=\"column-2\">500<\/td><td class=\"column-3\">1000<\/td><td class=\"column-4\">664<\/td><td class=\"column-5\">540<\/td><td class=\"column-6\">3.1<\/td>\n<\/tr>\n<tr class=\"row-41\">\n\t<td class=\"column-1\">adequate (3\/4)<\/td><td class=\"column-2\">500<\/td><td class=\"column-3\">1000<\/td><td class=\"column-4\">743<\/td><td class=\"column-5\">620<\/td><td class=\"column-6\">4.03<\/td>\n<\/tr>\n<tr class=\"row-42\">\n\t<td class=\"column-1\">acceptable (4\/5)<\/td><td class=\"column-2\">500<\/td><td class=\"column-3\">1000<\/td><td class=\"column-4\">793<\/td><td class=\"column-5\">665<\/td><td class=\"column-6\">4.68<\/td>\n<\/tr>\n<tr class=\"row-43\">\n\t<td class=\"column-1\">low (5\/6)<\/td><td class=\"column-2\">500<\/td><td class=\"column-3\">1000<\/td><td class=\"column-4\">824<\/td><td class=\"column-5\">700<\/td><td class=\"column-6\">5.18<\/td>\n<\/tr>\n<tr class=\"row-44\">\n\t<td class=\"column-1\">very low (8\/9)<\/td><td class=\"column-2\">500<\/td><td class=\"column-3\">1000<\/td><td class=\"column-4\">884<\/td><td class=\"column-5\">760<\/td><td class=\"column-6\">6.2<\/td>\n<\/tr>\n<tr class=\"row-45\">\n\t<td class=\"column-1\">very low (9\/10)<\/td><td class=\"column-2\">500<\/td><td class=\"column-3\">1000<\/td><td class=\"column-4\">894<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">6.42<\/td>\n<\/tr>\n<tr class=\"row-46\">\n\t<td class=\"column-1\">extremely high (1\/4)<\/td><td class=\"column-2\">1000<\/td><td class=\"column-3\">2000<\/td><td class=\"column-4\">490<\/td><td class=\"column-5\">370<\/td><td class=\"column-6\">-2.35<\/td>\n<\/tr>\n<tr class=\"row-47\">\n\t<td class=\"column-1\">very high (1\/3)<\/td><td class=\"column-2\">1000<\/td><td class=\"column-3\">2000<\/td><td class=\"column-4\">649<\/td><td class=\"column-5\">530<\/td><td class=\"column-6\">-1.24<\/td>\n<\/tr>\n<tr class=\"row-48\">\n\t<td class=\"column-1\">very high (2\/5)<\/td><td class=\"column-2\">1000<\/td><td class=\"column-3\">2000<\/td><td class=\"column-4\">789<\/td><td class=\"column-5\">650<\/td><td class=\"column-6\">-0.3<\/td>\n<\/tr>\n<tr class=\"row-49\">\n\t<td class=\"column-1\">highest (1\/2)<\/td><td class=\"column-2\">1000<\/td><td class=\"column-3\">2000<\/td><td class=\"column-4\">988<\/td><td class=\"column-5\">830<\/td><td class=\"column-6\">1<\/td>\n<\/tr>\n<tr class=\"row-50\">\n\t<td class=\"column-1\">highest (3\/5)<\/td><td class=\"column-2\">1000<\/td><td class=\"column-3\">2000<\/td><td class=\"column-4\">1188<\/td><td class=\"column-5\">1030<\/td><td class=\"column-6\">2.23<\/td>\n<\/tr>\n<tr class=\"row-51\">\n\t<td class=\"column-1\">normal (2\/3)<\/td><td class=\"column-2\">1000<\/td><td class=\"column-3\">2000<\/td><td class=\"column-4\">1328<\/td><td class=\"column-5\">1140<\/td><td class=\"column-6\">3.1<\/td>\n<\/tr>\n<tr class=\"row-52\">\n\t<td class=\"column-1\">adequate (3\/4)<\/td><td class=\"column-2\">1000<\/td><td class=\"column-3\">2000<\/td><td class=\"column-4\">1487<\/td><td class=\"column-5\">1310<\/td><td class=\"column-6\">4.03<\/td>\n<\/tr>\n<tr class=\"row-53\">\n\t<td class=\"column-1\">acceptable (4\/5)<\/td><td class=\"column-2\">1000<\/td><td class=\"column-3\">2000<\/td><td class=\"column-4\">1587<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">4.68<\/td>\n<\/tr>\n<tr class=\"row-54\">\n\t<td class=\"column-1\">low (5\/6)<\/td><td class=\"column-2\">1000<\/td><td class=\"column-3\">2000<\/td><td class=\"column-4\">1648<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">5.18<\/td>\n<\/tr>\n<tr class=\"row-55\">\n\t<td class=\"column-1\">very low (8\/9)<\/td><td class=\"column-2\">1000<\/td><td class=\"column-3\">2000<\/td><td class=\"column-4\">1768<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">6.2<\/td>\n<\/tr>\n<tr class=\"row-56\">\n\t<td class=\"column-1\">very low (9\/10)<\/td><td class=\"column-2\">1000<\/td><td class=\"column-3\">2000<\/td><td class=\"column-4\">1788<\/td><td class=\"column-5\"><\/td><td class=\"column-6\">6.42<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/span><\/p>\n<p><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5eac4f320f645.png\"><img loading=\"lazy\" decoding=\"async\" class=\" alignright wp-image-3520 size-medium\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5eac4f320f645-300x117.png\" alt=\"\" width=\"300\" height=\"117\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5eac4f320f645-300x117.png 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5eac4f320f645-768x301.png 768w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5eac4f320f645.png 994w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>Let&#8217;s take the example of this signal: We will transmit a DVBS2 signal in QPSK and at 333 KS (kilo-symbols). We will start with a high correction rate 1\/2 (i.e. 50% correction data). The CBR value is 220 kbps.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3521 size-medium alignright\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5eac568fc7993-300x164.png\" alt=\"\" width=\"300\" height=\"164\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5eac568fc7993-300x164.png 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5eac568fc7993-768x420.png 768w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5eac568fc7993.png 980w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>Let&#8217;s report this CBR value in OBS Studio :<\/p>\n<ol>\n<li>Open the Settings panel (from the File menu, or directly from the command button, at the bottom right of the screen)<\/li>\n<li>Select the second line &#8220;Stream&#8221;<\/li>\n<li>Choose Service &#8220;Custom&#8230;&#8221;Enter the stream command line in the Stream tab to transmit to the satellite.<\/li>\n<li>\n<pre class=\"\">rtmp:\/\/192.168.1.8:7272\/,2408.25,DVBS2,QPSK,333,12,0,nocalib,800,32,\r\n<\/pre>\n<p>and the stream key with <em>your<\/em> callsign enclosed in commas<\/p>\n<pre class=\"\">,F5UII,<\/pre>\n<\/li>\n<li>Select the third line &#8220;Output&#8221;.<\/li>\n<li>We switch to the <em>output mode<\/em> to <em>Avanced<\/em>.<\/li>\n<li>Select the Streaming tab. We will enter the CBR rate<\/li>\n<li>Validate these settings by clicking on OK in the Settings window.<\/li>\n<li>We can switch to the transmit by clicking on the Start streaming command button. To make your first tests, I advise you not to transmit to QO100. After a few seconds, the transmission signal is effective. Note that the same button allows you to stop the transmission.<\/li>\n<li>If the Adalm Pluto is receiving the stream, in the bottom right corner of the OBS Studio window the green light appears.\n<p id=\"RrWWTof\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3525 size-full\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5eac60572836f-e1588355183713.png\" alt=\"\" width=\"722\" height=\"29\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5eac60572836f-e1588355183713.png 722w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5eac60572836f-e1588355183713-300x12.png 300w\" sizes=\"auto, (max-width: 722px) 100vw, 722px\" \/><\/p>\n<\/li>\n<\/ol>\n<p><!--nextpage--><\/p>\n<h2 class=\"np-title np-added\">Analyzing your video stream with PlutoDVB<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3512 alignright\" style=\"font-size: 1.5rem;\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5eac290d14309.png\" alt=\"\" width=\"304\" height=\"44\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5eac290d14309.png 352w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5eac290d14309-300x43.png 300w\" sizes=\"auto, (max-width: 304px) 100vw, 304px\" \/>With PlutoDVB&#8217;s built-in analysis tools, we will check that our CBR flow is not too high and also, conversely, if we may increase it a little bit. Click on the Analysis button (or go directly to the dedicated page of PlutoSDR <a href=\"http:\/\/192.168.2.1\/analysis.php\" target=\"_blank\" rel=\"noopener noreferrer\">http:\/\/192.168.2.1\/analysis.php<\/a>).<\/p>\n<p>On this video, you can compare the two situations.<\/p>\n<ul>\n<li>On the left a setting of too high a video bit rate. The red dots that appear are information that cannot be processed by PlutoDVB. On reception, the audio signal will show white spots or cuts, the video will be jerky or frozen.<\/li>\n<li>On the right, a correct data rate, all the points of the buffered data curve are green. Even if, depending on the movement of the curve over time, they approach the horizontal axis at 0, but at no time does the curve pass below the axis. It can also be seen in the data type decomposition graph (transport stream analysis, top) that data packets are null present. This indicates that we might be able to increase the CBR throughput a bit. (Based on the minimum null packet stub, maybe 5 or 10kpbs for this illustration . To be tested by a new iteration of tuning, detailed below).<\/li>\n<\/ul>\n<div style=\"width: 540px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-3245-2\" width=\"540\" height=\"304\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/PlutoDVB-en.mp4?_=2\" \/><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/PlutoDVB-en.mp4\">https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/PlutoDVB-en.mp4<\/a><\/video><\/div>\n<p>&nbsp;<\/p>\n<p>To refine the CBR video bit rate, I recommend the following technique:<\/p>\n<ul>\n<li>Calculate your flow rate (or let the rate calculated with online tools as indicated above) using a rather low coefficient (60%).<\/li>\n<li>Switch to streaming your channel. You are asked not to transmit to the satellite during this tuning phase and to make your settings on a load or another frequency. Personally, my final amplification stage is disabled.<\/li>\n<li>Consult the dynamic graph of analysis of the PlutoDVB video buffer. On the Transport stream analysis graph, the number of null packets are as many kbit\/s that you will be able to add (transfer) to the value of your CBR, to make it useful video data. Turn off your streaming.<\/li>\n<li>Readjust (increase) your CBR in OBS Studio with the null packet number. Resend your stream to PlutoSDR.<\/li>\n<li>The null packages must have decreased. You should always have some, to compensate for the vagaries of some videos with highly fluctuating streams, and which is necessary to compensate for the &#8220;time constant&#8221; of the stream&#8217;s arrival at Adalm Pluto.<\/li>\n<\/ul>\n<p>Depending on the dynamics of your video images, you may notice a larger amplitude of buffer variation. If this is the case and the signal passes under the horizontal axis from time to time but returns to a steady state in the green zone, you can increase the PCR\/PTS (buffer) value (1000 &#8211; 1500 for example). The disadvantage is the longer transmission delay.<\/p>\n<h3>The choice of the FEC<\/h3>\n<p>Before seeing how to choose the right FEC, it is necessary to introduce the notion of MER.<\/p>\n<h4>MER (Modulation Error Rate)<\/h4>\n<p>The modulation error rate or MER is a measure used to quantify the performance of a digital radio (or digital television) transmitter or receiver in a communication system using digital modulation (such as PSK modulation). A signal sent by an ideal transmitter or received by a receiver would have all points of the constellation precisely at the ideal locations, however various imperfections alter the constellation in implementation (such as noise, low image rejection rate, phase noise, carrier suppression, distortion, etc.).<\/p>\n<p>MER can be considered as an indicator of signal strength at reception. If your transmit signal is lowered by 3 dB, you will see a decrease of approximately 3 dB MER at reception.\u00a0 The minimum reception levels (minimum MER) are dependent on the transmitter&#8217;s FEC :<\/p>\n<div id=\"attachment_3547-2\" style=\"width: 483px\" class=\"wp-caption alignright\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3547-2\" class=\"wp-image-3547 size-full\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5ead9794e2aba.png\" alt=\"\" width=\"473\" height=\"156\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5ead9794e2aba.png 473w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5ead9794e2aba-300x99.png 300w\" sizes=\"auto, (max-width: 473px) 100vw, 473px\" \/><p id=\"caption-attachment-3547-2\" class=\"wp-caption-text\">MER de 6.4dB pour un minimum requis de 4dB (FEC3\/4)<\/p><\/div>\n<p>You will only be able to decode images at a given MER level if you choose a FEC that does not require more signal. For example, for a signal with an FEC of 3\/4, (3 useful data + 1 error correction data), your signal will be decoded only if the MER level is 4.2 dB. <a href=\"https:\/\/www.f5uii.net\/en\/transmit-datv-over-qo100-with-sdr-adalm-pluto-f5oeo-plutodvb\/6\/#FEC-table\">Refer to the right column of the table above<\/a>.<\/p>\n<ul>\n<li>FEC 1\/2 : 1.7 dB<\/li>\n<li>FEC 2\/3 : 3.3 dB<\/li>\n<li>FEC 3\/4 : 4.2 dB<\/li>\n<li>FEC 5\/6 : 5.1 dB<\/li>\n<li>FEC 6\/7 : 5.5 dB<\/li>\n<li>FEC 7\/8 : 5.8 dB<\/li>\n<\/ul>\n<h3>Necessary signal power and width<\/h3>\n<p>For a 250 KS signal on a 1.2m dish, it is common to indicate that you need 30W. By doubling the size of your dish, you will divide the power needed by 4. In the table below you can see how the power needed for a 250KS signal evolves according to the diameter of the dish.<\/p>\n\n<table id=\"tablepress-12-no-2\" class=\"tablepress tablepress-id-12\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">Dish diameter (cm)<\/th><th class=\"column-2\">Power (W)<\/th><th class=\"column-3\">Power (dBm)<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">60<\/td><td class=\"column-2\">120<\/td><td class=\"column-3\">50.8<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">80<\/td><td class=\"column-2\">67<\/td><td class=\"column-3\">48.3<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">90<\/td><td class=\"column-2\">53<\/td><td class=\"column-3\">47.2<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">100<\/td><td class=\"column-2\">43<\/td><td class=\"column-3\">46.3<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\">120<\/td><td class=\"column-2\">30<\/td><td class=\"column-3\">44.8<\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\">150<\/td><td class=\"column-2\">19<\/td><td class=\"column-3\">42.8<\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\">180<\/td><td class=\"column-2\">13<\/td><td class=\"column-3\">41.1<\/td>\n<\/tr>\n<tr class=\"row-9\">\n\t<td class=\"column-1\">200<\/td><td class=\"column-2\">11<\/td><td class=\"column-3\">40.4<\/td>\n<\/tr>\n<tr class=\"row-10\">\n\t<td class=\"column-1\">240<\/td><td class=\"column-2\">7.5<\/td><td class=\"column-3\">38.4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n<p>But also, according to the transmitted spectrum width, you will multiply the necessary power by the coefficient indicated in the following table to know the necessary power. For example, you can transmit a 125 KS signal and a 1.2m parabola by going to half power, i.e. 15W. You will find the same signal level, just by transmitting less data via the satellite.<\/p>\n\n<table id=\"tablepress-13-no-2\" class=\"tablepress tablepress-id-13\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">SR (kSymbol)<\/th><th class=\"column-2\">Factor<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">2000<\/td><td class=\"column-2\">8.00<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">1500<\/td><td class=\"column-2\">6.00<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">1000<\/td><td class=\"column-2\">4.00<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">500<\/td><td class=\"column-2\">2.00<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\">333<\/td><td class=\"column-2\">1.33<\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\">250<\/td><td class=\"column-2\">1.00<\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\">125<\/td><td class=\"column-2\">0.50<\/td>\n<\/tr>\n<tr class=\"row-9\">\n\t<td class=\"column-1\">66<\/td><td class=\"column-2\">0.26<\/td>\n<\/tr>\n<tr class=\"row-10\">\n\t<td class=\"column-1\">33<\/td><td class=\"column-2\">0.13<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n<p><!--nextpage--><\/p>\n<h2 class=\"np-title np-added\">Image definition and compression<\/h2>\n<p>The image definition is the size of the image, the video you are going to transmit. You will choose the definition according to your CBR video bit rate. You will easily understand that it is not possible to transmit a large fluid image without blurring or artifacts at a low bit rate. H.264 compression is generally available as standard on PCs and graphics cards;<\/p>\n<p id=\"sVHDtcL\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-3552 size-medium\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5eada655232f7-300x234.png\" alt=\"\" width=\"300\" height=\"234\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5eada655232f7-300x234.png 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5eada655232f7-768x599.png 768w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/05\/img_5eada655232f7.png 981w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>Set your definition and the H.264 encoder in the OBS Studio parameters, in the Encoder fields (x264 or other proposed h264 encoder, depending on your graphics card) and output scaling.<\/p>\n<p>There is also the H.265 encoding with a much more powerful compression, and capable of being sent to PlutoDVB. Thanks to an algorithm that increases the static areas in the image and &#8220;tightens&#8221; the compression mesh, the H.265 encoder is able to save up to 70-80% of bandwidth for the same quality as H.264 encoding.<\/p>\n<p><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/h264-h265.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-3553\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/h264-h265-300x144.jpg\" alt=\"\" width=\"300\" height=\"144\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/h264-h265-300x144.jpg 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/h264-h265.jpg 748w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>On the other hand, H.265 encoding is only available on some recent graphics cards. Some third-generation Nvidia cards integrate an NVENC H.265 encoder (NVIDIA&#8217;s encoder). Refer to the <a href=\"https:\/\/developer.nvidia.com\/video-encode-decode-gpu-support-matrix\" target=\"_blank\" rel=\"noopener noreferrer\">GPU manufacturer&#8217;s list<\/a> to know if your GPU integrates this H.265 encoding technology.<\/p>\n<h4>The external h.265 video encoder<\/h4>\n<p>For those who do not have a PC with a graphics card that supports H.265 encoding, there is the possibility of using an external encoder such as this one, referenced ON-DMI-16D (1080P@50fps) \u00a0or ON-DM1-16A (1080p@60fps):<a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/Encoder-H265.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-3556\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/Encoder-H265-300x183.jpg\" alt=\"\" width=\"300\" height=\"183\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/Encoder-H265-300x183.jpg 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/Encoder-H265.jpg 679w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/Encoder-H265-b.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-3563 size-medium\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/Encoder-H265-b-300x199.jpg\" alt=\"\" width=\"300\" height=\"199\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/Encoder-H265-b-300x199.jpg 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/Encoder-H265-b-768x510.jpg 768w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/Encoder-H265-b-1280x850.jpg 1280w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/Encoder-H265-b.jpg 1728w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<div id=\"attachment_3581-2\" style=\"width: 810px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/SDR-DATV-Encoder-H265.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3581-2\" class=\"wp-image-3581\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/SDR-DATV-Encoder-H265.jpg\" alt=\"\" width=\"800\" height=\"400\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/SDR-DATV-Encoder-H265.jpg 1114w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/SDR-DATV-Encoder-H265-300x150.jpg 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/SDR-DATV-Encoder-H265-768x384.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><p id=\"caption-attachment-3581-2\" class=\"wp-caption-text\">Synoptic with the video encoder on the network<\/p><\/div>\n<p>The box is to be considered as a video projector that would be connected to your computer. Except that in our case, the encoder does not project an image but encodes the video and audio to send it via network to a receiver\/diffuser, receiver which in our case is the Adalm Pluto with the firmware PlutoDVB. The H.264\/H.265 encoder has an HDMI connector through which we will send the video and audio. It is advisable to use the RJ45 cable to connect the box to the network rather to the wifi network, which is more prone to disturbance.<\/p>\n<p>You will find this H.264 and H.265 encoder at an interesting price distributed by the Chinese market :<\/p>\n<ul>\n<li><a href=\"https:\/\/s.click.aliexpress.com\/e\/_AE9mwh\" target=\"_blank\" rel=\"noopener noreferrer\">Link to Aliexpress<\/a><\/li>\n<li><a href=\"https:\/\/www.ebay.com\/itm\/264835210114?hash=item3da9689b82:g:a3sAAOSw0WtfOkLr&amp;mkcid=1&amp;mkrid=711-53200-19255-0&amp;siteid=0&amp;campid=5338475756&amp;customid=&amp;toolid=10001&amp;mkevt=1\" target=\"_blank\" rel=\"noopener noreferrer\">Link to Ebay<\/a><\/li>\n<\/ul>\n<p>Here is the H265 encoder manual : <a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/H.265-HDMI-Video-Encoder-Quick-Start-Guide_ERV1.2.pdf\">H.265 HDMI Video Encoder Quick Start Guide_ERV1.2.pdf<\/a><\/p>\n<p>A complete article about the implementation of this external encoder with the Pluto (Brave version) is available on this blog : <a href=\"https:\/\/www.f5uii.net\/datv-encoder-h265-hdmi-external-box\/\">DATV: How to encode in h.265 with an external HDMI encoder<\/a><\/p>\n<p>Note that Evariste is currently (May 2020) at work to reduce encoding delays, and make the stream more compliant with DVB-S2, DVB-S standards (See <a href=\"https:\/\/twitter.com\/F5OEOEvariste\/status\/1256680386610040832?s=20\" target=\"_blank\" rel=\"noopener noreferrer\">@f5oeo&#8217;s tweet on this subject<\/a>). We are always looking forward with eager anticipation to the delivery of all its developments .<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2><\/h2>\n<p><!--nextpage--><\/p>\n<h2 class=\"np-title np-added\">QO-100 wideband o&lt;u&gt;perating guidelines and bandplan&lt;\/u&gt;<\/h2>\n<blockquote><p>This page is the official rules established for satellite QO-100 broadband transponder usage, March 2020 edition. <a href=\"https:\/\/wiki.batc.org.uk\/QO-100_WB_Bandplan\" target=\"_blank\" rel=\"noopener noreferrer\">See the BATC website for the current version<\/a>.<\/p><\/blockquote>\n<p>Due to the very large number of potential users, <strong>all transmitting stations should monitor<\/strong> the wideband spectrum monitor and the co-ordination chat window that has been established by AMSAT-DL and the BATC at <a href=\"https:\/\/eshail.batc.org.uk\/wb\/\">https:\/\/eshail.batc.org.uk\/wb\/<\/a><\/p>\n<h3>Transponder Usage<\/h3>\n<p>As a general principle, the transponder should be only be used for short-duration tests and contacts.\u00a0 The only long-duration (more than 10 minute) transmissions should be:<\/p>\n<ul>\n<li>The TV beacon channel uplinked from Qatar or Bochum.<\/li>\n<li>Video of the live proceedings of AMSAT and Amateur TV Lectures and Conferences of wide interest. Examples might include:\n<ul>\n<li>National AMSAT Conferences<\/li>\n<li>National Amateur TV Conventions<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>The following content is unacceptable:<\/p>\n<ul>\n<li>Recordings of events, or broadcast of events, not explicitly concerned with Amateur Satellites or Amateur TV<\/li>\n<li>Transmission of any copyright material (such as movies or TV channels)<\/li>\n<li>Repeated transmission of test videos unless essential for equipment alignment<\/li>\n<\/ul>\n<p>The relaying of terrestrial Amateur TV Repeaters is discouraged unless the content is of exceptional amateur radio interest.<\/p>\n<h3>Transmission Power<\/h3>\n<p>All uplink transmissions should use the minimum power possible. QPSK transmissions should have a downlink signal with at least 1 dB lower power density than the Beacon \u2013 the web-based spectrum monitor enables users to set their uplink power to achieve this. Transmissions with symbol rates of less than 333 kS using 8PSK, 16 APSK or 32 APSK should use the minimum power density required to achieve successful reception.<\/p>\n<h3>Transmission Modes<\/h3>\n<p>Transmissions should use DVB-S2 where possible. For normal standard definition transmissions, 2 MS is the maximum symbol rate that should routinely be used.<\/p>\n<p>To enable easy decoding the following DVB PIDs are recommended: Video 256, Audio, 257, PMT 32 or 4095, PCR 256 or 258. Service Name should be set to CallSign. PMT PIDs 4000 \u2013 4010 should not be used.<\/p>\n<p>On Wednesdays (UTC time), experimenters are encouraged to try other modes \u2013 perhaps 6 MS using the whole transponder for brief (less than 10 minute) periods. It is essential that users announce their plans on the chat room page, and always monitor it.<\/p>\n<p>Experiments using unusual modes (for example ranging) should use the lower 1.5 MHz of the \u201cWide and Narrow DATV\u201d Segment.<\/p>\n<h3>Beacon<\/h3>\n<p>The beacon transmits continuously (10491.5 MHz, DVB-S2, SR 1500 kS) to provide a test signal and to allow new users to precisely align their antennas.<\/p>\n<h3>Bandplan<\/h3>\n<p id=\"lOSRHPO\"><img loading=\"lazy\" decoding=\"async\" width=\"596\" height=\"179\" class=\"alignnone size-full wp-image-3470 \" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c54a3c1685.png\" alt=\"\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c54a3c1685.png 596w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/04\/img_5e9c54a3c1685-300x90.png 300w\" sizes=\"auto, (max-width: 596px) 100vw, 596px\" \/><\/p>\n<div id=\"attachment_3484-4\" style=\"width: 1080px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/QO-100-Eshail-2-Wideband-Spectrum-Monitor.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3484-4\" class=\"wp-image-3484 size-full\" src=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/QO-100-Eshail-2-Wideband-Spectrum-Monitor.jpg\" alt=\"\" width=\"1070\" height=\"629\" srcset=\"https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/QO-100-Eshail-2-Wideband-Spectrum-Monitor.jpg 1070w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/QO-100-Eshail-2-Wideband-Spectrum-Monitor-300x176.jpg 300w, https:\/\/www.f5uii.net\/wp-content\/uploads\/2020\/01\/QO-100-Eshail-2-Wideband-Spectrum-Monitor-768x451.jpg 768w\" sizes=\"auto, (max-width: 1070px) 100vw, 1070px\" \/><\/a><p id=\"caption-attachment-3484-4\" class=\"wp-caption-text\">QO-100 Es&#8217;hail-2 Wideband Spectrum Monitor<\/p><\/div>\n<ol>\n<li>Narrow DATV transmissions should be confined to the \u201cNarrow DATV\u201d section, but may use the \u201cWide and Narrow DATV\u201d section if the Narrow DATV section is fully occupied.<\/li>\n<li>A maintenance uplink occupying 10494.0 MHz \u2013 10497.0 MHz will be used very occasionally; users are requested to give it absolute priority when notified.<\/li>\n<li>Recommended spot frequencies for various usages and symbol rates are listed below.<\/li>\n<\/ol>\n<table width=\"683\">\n<tbody>\n<tr>\n<td width=\"83\"><strong>Mode<\/strong><\/td>\n<td width=\"91\"><strong>Symbol Rate<\/strong><\/td>\n<td width=\"95\"><strong>Uplink Freq MHz<\/strong><\/td>\n<td width=\"106\"><strong>Downlink Freq<\/strong><\/p>\n<p><strong>MHz<\/strong><\/td>\n<td width=\"308\"><strong>Notes<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"83\">Beacon<\/td>\n<td width=\"91\">1500 kS<\/td>\n<td width=\"95\">2402.0<\/td>\n<td width=\"106\">10491.5<\/td>\n<td width=\"308\">Beacon DVB-S2 FEC 4\/5<\/td>\n<\/tr>\n<tr>\n<td colspan=\"5\" width=\"683\"><\/td>\n<\/tr>\n<tr>\n<td width=\"83\">Wide<\/td>\n<td width=\"91\">1 MS<\/td>\n<td width=\"95\">2403.75<\/td>\n<td width=\"106\">10493.25<\/td>\n<td rowspan=\"3\" width=\"308\">1.5 MS and 2 MS transmission should use this part of the band<\/td>\n<\/tr>\n<tr>\n<td width=\"83\">Wide<\/td>\n<td width=\"91\">1 MS<\/td>\n<td width=\"95\">2405.25<\/td>\n<td width=\"106\">10494.75<\/td>\n<\/tr>\n<tr>\n<td width=\"83\">Wide<\/td>\n<td width=\"91\">1 MS<\/td>\n<td width=\"95\">2406.75<\/td>\n<td width=\"106\">10496.25<\/td>\n<\/tr>\n<tr>\n<td colspan=\"5\" width=\"683\"><\/td>\n<\/tr>\n<tr>\n<td width=\"83\">Narrow<\/td>\n<td width=\"91\">333 kS<\/td>\n<td width=\"95\">2403.25<\/td>\n<td width=\"106\">10492.75<\/td>\n<td rowspan=\"3\" width=\"308\">Use these 14 frequencies for<\/p>\n<p>500 kS, 333 kS and 250 kS<\/p>\n<p>&nbsp;<\/p>\n<p>Use frequencies above 10497.0 first<\/td>\n<\/tr>\n<tr>\n<td colspan=\"4\" width=\"375\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Then every 500 kHz until<\/td>\n<\/tr>\n<tr>\n<td width=\"83\">Narrow<\/td>\n<td width=\"91\">333 kS<\/td>\n<td width=\"95\">2409.75<\/td>\n<td width=\"106\">10499.25<\/td>\n<\/tr>\n<tr>\n<td colspan=\"5\" width=\"683\"><\/td>\n<\/tr>\n<tr>\n<td width=\"83\">Very Narrow<\/td>\n<td width=\"91\">125 kS<\/td>\n<td width=\"95\">2403.25<\/td>\n<td width=\"106\">10492.75<\/td>\n<td rowspan=\"3\" width=\"308\">Use these 27 frequencies for<\/p>\n<p>125 kS, 66 kS and 33 kS<\/p>\n<p>&nbsp;<\/p>\n<p>Use frequencies above 10497.0 first<\/td>\n<\/tr>\n<tr>\n<td colspan=\"4\" width=\"375\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Then every 250 kHz until<\/td>\n<\/tr>\n<tr>\n<td width=\"83\">Very Narrow<\/td>\n<td width=\"91\">125 kS<\/td>\n<td width=\"95\">2409.75<\/td>\n<td width=\"106\">10499.25<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ol start=\"4\">\n<li>Uplink 2401.0 \u2013 2410.0 MHz RHCP, Downlink 10490.5 \u2013 10499.5 MHz Horizontal.<\/li>\n<\/ol>\n<p><!--nextpage--><\/p>\n<h2 class=\"np-title np-added\">Conclusion<\/h2>\n<div id=\"tablepress-7_wrapper\" class=\"dataTables_wrapper no-footer\">\n<p>I hope this article on DATV and PlutoSDR can help some radio amateurs to progress to the amateur TV broadcast. Although I have paid close attention to its content, some points may be inaccurate or even wrong. I am not a DATV specialist, but a true beginner, who made his first DATV experience with QO-100 in December 2019 . Feel free to solicit me through comments (at the bottom of the article) to bring your contribution to the readers.<\/p>\n<p>I will soon write an article about DATV reception as such, which is necessary for any transmitting station (about the use of Minitiouner Pro, but also with the S<a href=\"https:\/\/forum.amsat-dl.org\/index.php?thread\/101-software-dvb-s-demodulator\/\" target=\"_blank\" rel=\"noopener noreferrer\">DR solution of Markro92, the software demodulator<\/a>). Another project would be an article on DATV transmission using the LimeSDR-mini transmitter and a raspberry-pi on which the Portsdown tools are installed. This configuration was the one I implemented in the first place.<\/p>\n<p>Do not hesitate to post in comments your experiences, your remarks which are welcome to complete the article.<\/p>\n<p>I would like to make it clear that for your technical support needs, this is only envisaged through comments so that all readers can contribute and benefit equally. No support by private contact (email) will be provided. I also invite you to follow my <a href=\"https:\/\/twitter.com\/f5uii\/\" target=\"_blank\" rel=\"noopener noreferrer\">twitter account @f5uii<\/a> dedicated exclusively to amateur radio activities, on which a lot of interesting news and technical information are circulating and which I gladly share.<\/p>\n<p>Very good DATV transmission via Es&#8217;hail 2 \/ Phase 4A \/ Qatar Oscar 100 satellite !<\/p>\n<\/div>\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Following my previous articles about receiving and transmitting to the <a href=\"https:\/\/www.f5uii.net\/en\/category\/satellite\/\">Qatar Oscar 100 satellite<\/a>, here is an article that should be of interest this time those who wish to start emission of digital amateur television, commonly called DATV (Digital Amateur Television). A rather long article, but which explains step by step the operations to be implemented. <a class=\"more-link\" href=\"https:\/\/www.f5uii.net\/en\/transmit-datv-over-qo100-with-sdr-adalm-pluto-f5oeo-plutodvb\/\">Lire plus &#8230;<\/a><\/p>\n","protected":false},"author":1,"featured_media":3359,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[54],"tags":[58,60,59,56,55],"class_list":["post-3245","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-satellite","tag-datv","tag-plutodvb","tag-plutosdr","tag-qo100","tag-satellite"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"Explications d\u00e9taill\u00e9es pour \u00e9mettre en DATV sur Qatar Oscar 100 avec le micrologiciel F5OEO PlutoDVB install\u00e9 sur l&#039;Adalm Pluto SDRDetailed explanations for transmitting DATV over Qatar Oscar 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