for your list ...
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)
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