[Elecraft] Digital Modes (PSK31 and JT-65) not working on 40 meters

[Don Wilhelm]

Larry,

Try doing the TX Gain Calibration.  It is quite easy to do from K3 
Utility.  If it fails in K3 Utility, then try doing it on a band by band 
basis as indicated in the Calibration section of the manual.

73,
Don W3FPR

On 1/30/2016 10:27 AM, Larry Snyder wrote:
> PSK31 and JT-65 stopped working on 40 meters. . Initially I see the PO at 45
> watts but then it immediately backs off to a fraction of a watt with no or
> very little modulation on the P3 with the transmit monitor.
>
>   
>
> I change to 20 meters and everything works just fine.  Same computer, same
> everything - only thing changing it the band switch on the K3??
>