To that end it will carry a full size 10m wire dipole antenna. The 30KHz wide transponder is an inverting design intended to cancel out the effects of Doppler shift. In their write-up they provide ...

for the last year or two amateurs have had their own geostationary satellite transponder. Called Es’hail-2 / AMSAT Phase 4-A / Qatar-OSCAR 100, it lies in the geostationary orbit at 25.9° East ...

Remote-controlled DLR corner reflector with a leg length of 2.8 m. Deployed within the DLR calibration field which is located in South Germany. Currently operated for Sentinel-1A and Sentinel-1B - but ...

This allows a number of multiplexes to be transmitted from each satellite and a wider range of services to be broadcast. The term transponder is often interchanged with multiplex. This is ...