[Elecraft] Upper limits of KPA500?

[Eric Norris]

This has been very educational.  I have, unfortunately, faulted both my
veteran KPA500 and KPA1500 more times than I can count.  I've been so
paranoid about keeping them otherwise healthy, that I manually manipulate
the fan speed using the utilities--increasing the KPA500 fan speed when it
gets into the 60Cs, and the KPA1500 when it gets into the 70Cs.

The downside is I sometimes forget to reduce the fans when the chase is
over, and the amps quickly cool to room temperature, only to heat up again
when the next chase is underfoot.  Is this rapid cooling and heating even
worse for the life of the devices, and then again what about turning off
the amps when going QRT?  Should they be cooled to room temp first, or just
until the fans stop running in NOR mode?

The question isn't is one paranoid, but is one paranoid enough?

73 Eric WD6DBM

On Mon, May 4, 2020, 9:12 AM Jack Brindle via Elecraft <
elecraft at mailman.qth.net> wrote:

> From the KPA500 manual, Rev E1, page 41 Specifications:
> Duty Cycle at 500 Watts  10 minutes key down / 5 minutes standby
>
> Sometimes it is very worth while to read the manual. It gives me something
> to do when being stuck at home for so long gets me down.
>
> 73!
> Jack, W6FB
>
>
>