[Elecraft] KXV3B Question

[Don Wilhelm]

Jim,

I cannot speak to your conclusions about your change from XV1 to XV2.
What I can say is that your indication of a slow power increase in the 
output is usually a result of too little audio input to the K3(S).

If you do not have audio sufficient to drive the K3 to 4 bars on the ALC 
meter with the 5th bar flickering, power 'creep' as you have indicated 
is a common result.  The onset of ALC is indicated by the 5th bar on the 
meter, so 4 bars solid is still the "no ALC" point.

The K3(S) does not respond as most other transceivers for power control. 
  Ignore the internet advice to control the power with the audio level. 
Drive the audio level as I have described and control the power with the 
power knob on the K3.

73,
Don W3FPR

On 12/16/2016 6:16 PM, Jim Rogers wrote:
> I have been experiencing instability in drive to my K144XV/XV1/Beko
> HLV-1000.  I may have traced it down to the K3s' KXV3B board by creating
> another transverter, XV2, with the same setup as XV1. I  monitored the
> output of XVTR OUT with an RF power meter and 50 dummy load. I did
> observe a couple of occurrences of low power output that gradually came
> back to requested power during an 8 minute test running WSTJx's MSK144.
> The indication on the Beko watt meter is much more drastic of course.
>
> If you have a similar issue, I would appreciate an email and what you
> might have done to correct it. My intent is to re-seat the KXV3B board
> and if that fails, then possibly replace it.
>