[Elecraft] K4D - KPA500 Fault Question + wish

Jim Brown jim at audiosystemsgroup.com
Mon Apr 25 14:52:18 EDT 2022


On 4/25/2022 4:15 AM, Andy Durbin wrote:
> My test data showed no significant advantage in temperature control over just letting KPA 500 decide when to run the fan.

Neighbor K6XX, a serious contester and the Elecraft engineer responsible 
for putting both of their amps into production, advised me to use the 
default settings for fan control, letting the firmware deal with thermal 
issues. Bob knows that I do a LOT with WSJT modes on 6M during the 
summer. He also advised me to turn off the amp when not in use, noting 
that fans have the lowest MTBF of any parts in the amps, thanks in part 
to the accumulation of dust.

73, Jim K9YC


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