This is the carrier from the propagation experiment on a nominal frequency of 39.402GHz, actually about 23kHz high.
Received using an old experimental link RX head end, thanks uhf-satcom. An external, 9.5GHz, GPSDO locked source is multiplied to give a 38GHz LO. The noise figure is in the region of 8-10dB with a linear polarised feed on a 220mm Cassegrain dish. Bits fell off the ageing down-converter before I had time to look for the beacon on 38.4027GHz.