[Elecraft] Erratic KPA-1500 behavior

[AJ8MH Radio]

I see some reports of K3 overshoot when changing bands or adjusting 
drive.  That would cause excessive drive.  Performing the re-calibration 
procedure may correct the problem.

On 3/27/2024 10:18 AM, Pete Smith N4ZR wrote:

> This morning, starting the CWT,  every few transmissions my amp was 
> faulting with the indication of excessive driving power (~67 watts vs 
> 33 watts normally).  Each time, it would fault once, then operate 
> normally for a dozen or so transmissions before the next fault. Then, 
> about 10 minutes into the hour, the faults stopped happening.  The K-3 
> showed 33 watts throughout
>
> I checked the KPA-1500 log, and all it shows is the "power input" 
> fault.  What could be causing this erroneous indication of excessive 
> drive?  A sticky relay?
>
-- 
Joe Hutchens
AJ8MH - Radio
Marquette, MI