[Mich VHF UHF Society] results of PSK-31 test tonight

Russell Dwarshuis rjd at merit.edu
Tue Feb 17 12:57:35 CST 2015


I didn't notice any appreciable IMD on Roger's signal.

Russ  KB8U

----- Original Message -----
From: "David DeVos" <kf8ql at yahoo.com>
To: mivus at mivus.org
Sent: Monday, February 16, 2015 10:05:02 PM
Subject: Re: [Mich VHF UHF Society] results of PSK-31 test tonight

Roger - are you sure you weren't over saturated? Was your AGC level at 0? 


Dave DeVos - KF8QL - 616-706-8736 
http://www.davedevos.com 
http://www.mythinplace.com 


From: Roger Cox <rgcox2 at gmail.com> 
To: "mivus at mivus.org" <mivus at mivus.org> 
Sent: Monday, February 16, 2015 8:58 PM 
Subject: [Mich VHF UHF Society] results of PSK-31 test tonight 

I was able to work KB8U in EN71sw on PSK-31. Thanks Russ! Signals were 
very strong at the beginning, but copy was intermittent. Russ turned 
his beam away and got 100% copy for a while. I did also. However the 
band faded and the copy did too. It seemed as though the signal 
strength had to be in a sweet spot for solid copy. I may have some 
transmitter drift causing problems too. In my IC-746, the fan comes on 
every time I transmit, and this causes the oscillator to drift. when I 
stop transmitting, the frequency drifts back to "normal". I have seen 
this effect also on JT-65b. It looks like I need to dig into my rig and 
make the N0UK mods. 

73 Roger W8IO 

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