S'équiper pour l'émission vers le satellite
Synoptic of the transmission line
This is the basic principle of transmission on the uplink to the satellite, in SDR transmission. In this article we will discuss all the stages that make up the transmission line, and especially the transmission and amplification part: the transmitter is no more constituted by a “classical” conversion and analog technology but by a SDR (Software Defined Radio) technology emitter. To get a technical understanding of SDR, I suggest you watch the video presentation (in french) of a SDR conference by Sylvain F4GKR and available on the REF-Info channel.
This synoptic is composed of three main parts (from left to right):
- A transmitting antenna adapted to the 2.4GHz frequency
- An amplification and preamplification and filtering part
- The SDR transmitter capable of emitting on 2400MHz, operated by a computer equipped with SDR Console (installed on a Windows® system) and a sound card and headset