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17 Feb 2020

139 km on 122 GHz (a new world record for this band) QSOs between

Mike, K6ML, on Mt Vaca (CM88WJ75ON, 835m ASL)

and

Oliver, KB6BA, (at 1225)

& Jim, N9JIM, (at 1250),         both on Mt Umunhum (CM97BD18VJ, 1016m ASL)

CW was used, 122 GHz signals were very weak (7 dB above the noise in 22 Hz; -13 in 2500 Hz equivalent) with QSB down to the noise floor.   Dishes were aligned on 24 GHz (71 dB above the noise) prior to QSY to 122 GHz; we heard signals right away on 122 GHz.   

WX:  Dew Point -11C, Air Temp +15C, path loss ~ 225 dB, atmospheric loss ~0.35 dB/km

73,  K6ML