[Elecraft] KPA100 Temp/Fan

[Jay Schwisow]

Jim,

I run alot of CW contests and with constant CQing/exchanges you could 
fry an egg on the heatsink.  The existing cooling cannot keep up with 
the heat generated.   It looks a bit Frankenstein but I mounted (with 
double back tape) a 12 volt 2.5" muffin fan on top of the heat sink.  It 
runs cool as a cucumber now.  This is now standard operating procedure  
for contests I run at 100w.

Jay - KT5E

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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