I use the 2.4 m offset antenna, Octagon LNB (20 m RG6 TV cable) without the GPSDO and Signal Hound SA44B spectrum analyser.
Nice set-up, and thanks for providing the details. It sure had to be something big!
Posts by DL2KCD
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Beacons 10706 H and 11205 V.
Wow, what antenna are you using?
From the screenshots, one gets about 36 dB S/N @ RBW = 250 Hz for the 11205 MHz beacon carrier (upper image), and 41 dB S/N @ RBW = 100 Hz for the 10706 MHz beacon carrier (lower image). That translates to S/N = 50 dB and 51 dB, respectively, at RBW = 10 Hz, which is what most people here seem to be using (although mostly not specified). Typical values from other postings seem to be around 35 dB to 38 dB for RBW = 10 Hz. So I am wondering what your set-up is!