Wow! Thanks for all your replies. I think I'll take the advice offered by
several responders and set the fan for 'hi/lo' and stop worrying. I can
live with the noise using headphones much of the time anyway. Just thought
it was odd. Next time I open the rig up, I'll recheck the bias to the
finals - just to be sure.
73,
Jim
Jim Stoneback wrote:
I searched the archives and didn't find anything on this, but from
what I've read, I think I may have a problem with my KPA100. When
operating CW the fan turns on high during every transmission and the
heat sink gets hot to the touch. I'm a ragchewer so my transmissions
do run to several minutes and, regardless of power setting, the fan
will kick on high after several minutes of transmitting. Fan is set
to 'nor'. Sending speed ranges from 15-20 wpm. Ambient temperature
in the shack is around 74F. The fan has never kicked up to high when
on SSB but I don't operate fone much, and generally don't talk for
very long when I do. The K2/100 (recent build, sn 6194, KPA100
Version F1.10) operates well in all other respects. Does anyone have
an idea what may be wrong?
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