The following Images were captured on an ~85deg el. pass of VO-52 on May 21, 2005.
The setup was an AOR AR5000 receiver connected to a 4 element 2m beam pointed by hand sort of in the direction of the satellite.
The 10.7MHz IF out of the AR5000 receiver was fed into the SDR14 digital spectrum analyzer/receiver and displayed with the SpectraVue program.
This image shows the complete transponder passband on 145.90 MHz. Interesting features are the clearly visable noise floor of the transponder and also the continuous CW beacon that is just above and outside the passband. I think this is the AMSAT-India transponder in action.
This waterfall capture shows an overview of activity and all the doppler shifting and compensation that is taking place.
This shot is a "Time Zoomed" waterfall showing more detail of the signals. Note the lighter background of the transponder noise floor. The SSB signal in the middle is actually two stations that managed to end up on top of one another. The far right SSB QSO was from a portable station at the Dayton Hamfest(WO4MA and VE4AMU)
Demodulated mp3 file is here(1.3Meg) : vo52demod.mp3.
