[Elecraft] PSK On USB

[Julian, G4ILO]

kd1na wrote:
> 
> Steve,
> I use USB mode on PSK all the time and never had a problem with IMD. You
> have to make sure your compression (CMP) is set at zero (0) and keep the
> ALC between 1 and 5 bars. I have operated this way with my K3 for as long
> as I have had it with no problems.
> 
> 
I'm not sure whose post you were replying to. I did make a comment in
another thread about IMD when operating PSK this way. I did so because when
making my power output comparison between DATA A and USB I actually checked
the PSK IMD using my KK7UQ IMD meter and I did observe some degradation when
4 or 5 bars of ALC were used. I saw -25dB which many people would still
consider acceptable but my K3 is capable of -29dB with three bars or less,
exactly the same as if DATA A is used.

-----
Julian, G4ILO. K2 #392  K3 #222.
http://www.g4ilo.com/ G4ILO's Shack   http://www.g4ilo.com/blog.html G4ILO's
Blog    http://www.g4ilo.com/kcomm.html KComm for Elecraft K2 and K3 
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