I've been 'burning in' my new KPA100 this weekend in the ARRL DX contest.
I've noticed something strange though, it's very intermittant, I've
only seen it twice now over the weekend.
- Antenna SWR is flat, 1.0:1
- Palstar wattmeter indicates 100W out
- Band is 40M
Now, the strange part - very occasionally, the CW sidetone tone will
change to a more "labored" tone (can't quite describe it, other than
maybe a bit distorted, but it's very subtle), K2 reports a brief
HI-CUR, and Palstar wattmeter indicates about 140W output. If I
immediately go into high-power TUNE, it again indicates 100W and
everything is back to normal again. This whole scenario is on the
order of a few seconds in duration.
I looked through the archives and didn't find anything like this one.
Everything else appears to be working perfectly. I listened to my own
signal on another radio and it sounds clean to my ear, for whatever
that's worth, but of course I wasn't able to capture what it sounds
like under this intermittent higher output scenario.
Thanks for any ideas...
Jeff
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