[Elecraft] Power spike early K3

[tony.kaz at verizon.net]

I had the same problem with the K3/KPA1500 combination. I recalibrated the K3. Then I made sure I don't run the K3 at exactly 5W or 50W. The problem has not reappeared.N2TK, Tony


-----Original Message-----
From: Mikael Larsmark <mike at sj2w.se>
To: elecraft at mailman.qth.net
Sent: Sat, May 20, 2023 3:45 am
Subject: [Elecraft] Power spike early K3

Hi,

We have an early serial K3 which has got an issue with power spikes. I have
done a TX gain calibration without it making a difference. The spike
happens mainly when you have changed to a new band and during the first
transmission. After that the spike is a lot smaller and not much of an
issue.

Anybody have any ideas of what this could be because of? It kind of makes
it impossible to run a solid state amplifier on the radio and probably not
good for the tube amplifiers either.

/Mike, SJ2W
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