[Elecraft] K3 MCU 4.17 (APF beta) kills SSB output?

[Nate Bargmann]

* On 2010 04 Nov 21:10 -0500, Dave Perry N4QS wrote:
> Now I seem to have a real problem.  I did a TX Gain calibration using the K3 
> Utility for both 5 and 50 watts.  I worked perfectly and tx gain appeared to 
> be right on all bands.  I then did some testing into a dummy load with RTTY. 
> I noticed that power would start out at 25 watts and it would take several 
> transmissions to get it up to 70  to 100 watts.

This is precisely what I had been seeing, Dave.

On lyle's suggestion I rolled the MCU back to 4.14 and the FPF to 1.13
and left the DSP at 2.65.  The SSB ouput power persisted so I rolled the
DSP back to 2.60 and SSB power is back to normal matching CW power
again.  The improvement was immediate.

> Thanks in advance.  I would hate to see the K3 go down right before the SS 
> CW weekend.

Sorry to hear of your issues.  At Wayne's suggestion I had done the TX
Gain calibration on the beta firmware with no change in behavior.  I
will, however, bump back up to the beta before SS.  Now that I know
what's going on I can work with it.

73, de Nate >>

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