Today I copied the spectrum of signals received from ARISSat with an SDR-IQ (and homemade VHF / HFconverter ) and SpectraVue. The frequencies listed are the transmitted by satellite, and Doppler effectis clearly visible in the received signals, with higher frequencies at the beginning and lower at the end of the pass. The noise generated by linear transponder and the return of the transmission that I did in the UHF uplink are clearly visible. The CW-2 signal close to the 1kBPSK telemetry signalcan also be seen, as well as FM transmissions, switching between voice and SSTV.
Please see here: http://www.qsl.net/py4zbz/arissat.htm#o 73 de Roland. _______________________________________________ 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
