Low PowerOut Troubleshooting HInt?

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Low PowerOut Troubleshooting HInt?

Elecraft mailing list
I'd appreciate some thoughts on the following. Setting up for SS tonight, I measured K3 (SN474, all mods done) low power output all bands, CW and SSB, about 400 milliwatts before KPA3 kicks in, then increasing power to about 8 or 9 watts at 100 watt setting.  Tuner would function fine and tune at 5 watts, but post tune behaved the same way. Put the radio on the bench, and saw the same behavior, all bands. At the bench, before removing the cover, I administered one very firm diagnostic swat, and everything returned to normal and has behaved itself for about 30 minutes. Any chance that behavior is indicative of a particular connector/relay or other issue I should take a look at, as I can't replicate the problem now? Thanks for any thoughts. Scott ka9p
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Re: Low PowerOut Troubleshooting HInt?

Grant Youngman-2
Do you have the FP board gold pins installed?

As a Navy midshipman I spent the summer of 1965 on the USS J C Owens (DD-776) in the Med.  One of the radar units had a large chalked circle on the side of an equipment cabinet with the verbiage “If I don’t work hit me here”.  Observed this repair technique used once.  Worked well :-)

Grant NQ5T

> On Nov 1, 2019, at 10:48 PM, Scott McDonald via Elecraft <[hidden email]> wrote:
>
> I'd appreciate some thoughts on the following. Setting up for SS tonight, I measured K3 (SN474, all mods done) low power output all bands, CW and SSB, about 400 milliwatts before KPA3 kicks in, then increasing power to about 8 or 9 watts at 100 watt setting.  Tuner would function fine and tune at 5 watts, but post tune behaved the same way. Put the radio on the bench, and saw the same behavior, all bands. At the bench, before removing the cover, I administered one very firm diagnostic swat, and everything returned to normal and has behaved itself for about 30 minutes. Any chance that behavior is indicative of a particular connector/relay or other issue I should take a look at, as I can't replicate the problem now? Thanks for any thoughts. Scott ka9p

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