RSGB News

The 435 to 145MHz linear transponder onboard the Delfi D Oh 64 satellite has been activated. The transponder uplink is 435.570 to 435.530MHz and the downlink is 145.880 to 145.920MHz. All frequencies are +/- Doppler shift that can be up to 3kHz at 145MHz. The transponder is inverting, which means Lower Sideband is translated to a Upper Sideband signal on the downlink. Delfi D Oh 64 was built at the Delft University of Technology in the Netherlands. Since it was launched in April it has been collecting educational research data for use by the university students with the assistance of radio amateurs around the world.