[Elecraft] Erratic KPA-1500 behavior

2024-03-27 Thread Pete Smith N4ZR
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?


--
73, Pete N4ZR
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] Erratic KPA-1500 behavior

2024-03-27 Thread 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

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com