[Elecraft] KPA100 problem

[Leo Starrenburg PA5LS]

Hello Don,

the high temp. and fan running is something I have with my KPA as well. I
also got a very high output from the KPA, close to 200W on my powermeter. It
turned out U6 was defective, a new one is on it's way, as is a new MCU. My
version was 1.06. as soon as they arrive I'll install them and report back
to the Reflector. I have my KPA- and KAT100 in an EC2, without the resistor
in the feedline from the K2, the length of the RG58-U coax between them is
abt a foot.

73' Leo PA5LS



> For the last couple of days when I power up my K2/100, the fan begins
running
> immediately, and when I attempt to key the xmtr at more than 10 watts out,
I
> get a PA hot report as well as high swr.  This is into a resonant antenna.
> The problem occurs when the heat sink is cold to the touch.  When I bring
up
> CAL tpa on the menu, the heat sink temp shows very high readings.  I
recently
> changed out the firmware for the KAT 100.