[CQ-Contest] Reciprocity in signal strength

[George Skoubis]

There are large differences in local noise. 

Maybe the other station has neighbors with grow lights, noisy solar, pool cleaning motors, arcing power lines, etc.  

Or the other station is somewhere with really low noise and can hear you really well and you can’t hear him.  

The beam can be turned to a direction with lower / higher noise and that can be a factor as well. 

It is frustrating to call and call a station you can hear well and they don’t hear you.  

73,

George / W7GES 

> On Jan 22, 2023, at 6:24 AM, Pete Smith N4ZR <pete.n4zr at gmail.com> wrote:
> 
> Of course, and if there is no competition at that moment, you can probably make the QSO, but if there is ....
> 
> 73, Pete N4ZR
> 
>> On 1/22/2023 1:10 AM, Barry Jacobson wrote:
>> Hi guys, it seems that in a contest like NAQP where presumably almost
>> everyone is running the same 100 W power, you should be able to hear the
>> other guy at the same level he hears you. Even if the other guy has a
>> $25,000 dollar beam, and you have a simple 10 foot random wire, the
>> weakness in your transmission ability will also weaken your received signal
>> just as much in the other direction. So if you can hear him, it guarantees
>> he can hear you. (Unless one or both of you has separate receive and
>> transmit antennas, or the receivers you are using are of very different
>> quality.) Does that make any sense?
>> 
>> Barry WA2VIU
>> 
>> --
>> Barry Jacobson
>> WA2VIU
>> bdj at alum.mit.edu
>> @bdj_phd
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