[CQ-Contest] Reciprocity in signal strength

[K9MA]

On 1/22/2023 1:11 PM, Jim Brown wrote:
> Yes, I've long been convinced that many (most?( instances assigned to 
> "one way propagation" are really differences in RX noise, or of 
> propagation from directions on the other end of the QSO that are 
> stronger than other than mine. One example is a few hours after the 
> start of 160M contests, when I'm hearing bigger east coast stations 
> plenty well enough to copy, but they don't hear me. Yes, directional 
> RX antennas on both ends is a factor, but because the band is open to 
> the east for them, they have both signals and noise propagated from 
> the east. 

A similar thing happens trying to work EU from W9 on 80 just after our 
sunset: We hear the EU stations just fine, but they are hearing a 
horrendous din coming from everywhere in EU and to east. It's really 
hard to get through that, especially in CQWW. Similarly, when Jim is 
hearing the east coast at the beginning of the 160 contest, they are 
hearing lots of much louder stations from eastern NA.

73,

Scott K9MA

-- 
Scott  K9MA

k9ma at sdellington.us