That's an interesting observation Jerry. Not something we saw during commissioning the satellite.
A possible cause would be image response of the dongle. Do you have the 'zero frequency' somewhere between the beacon and the transponder passband? e.g. 145.945 or off to one side e.g. 145.920?
Other possibility is a large signal in the transponder passband causing the beacon to FM. Is the modulation 'FM' or does it decode as SSB?
Thanks
David G0MRF
-----Original Message----- From: n0jy n0jy@n0jy.org To: AMSAT-BB amsat-bb@amsat.org Sent: Fri, 6 Dec 2013 4:40 Subject: [amsat-bb] AO-73 QSOs on the beacon?
During the eclipse passes while copying telemetry with my Funcube Dongle Pro + I am hearing SSB QSOs on the beacon frequency. They usually "walk" across it but what puzzles me is that the website info indicates that the transponder passband is well away from the beacon frequency. Am I experiencing some weird stuff with my Dongle or is it possible for stations to work on an uplink that puts their downlink on the beacon frequency?
Thanks, Jerry N0JY _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb