Posted by
David Herring-3 on
May 02, 2012; 9:05pm
URL: http://elecraft.85.s1.nabble.com/Re-question-for-psk-users-tp7517322p7522924.html
Further to this, on the RX side of the equation if you vary your RF gain, you can sometimes see PSK traces "pop" out of the noise on your waterfall that you might not have noticed there before. I worked a station last week where I thought there might have been a signal in the noise on my waterfall but wasn't sure, parked my pointer on it and did manage to get bits and pieces of text, but when I adjusted the RF gain down, the noise dropped away exposing his signal more clearly and I was then able to actually work that guy.
We were both running about 25-30 watts, he was around 7700 miles away and I have a compromise antenna.
The notion of adjusting the RF gain down has been discussed on here before in the context of SSB and CW, but I bring it up again for those who may not have thought to try it with PSK.
Now, regarding power, there were other signals near his on my waterfall (even within the confines of my narrowest filter (400)), but none were strong enough to reduce my receiver's sensitivity. Were there someone there running a dirty signal or a lot of power, this QSO would never have happened.
73 & Aloha
Dave, AH6TD
On May 2, 2012, at 2:50 AM, Joel Black wrote:
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