Actually that would be good to know... I let the
fans take the temp down to room temp before
shutting the 1500 off... Frank (W2YK)
At 07:35 PM 5/5/2020, Dave Cole wrote:
Remember... Just because you think they are out
to get you, does not mean they are not out to
get you... 73, and thanks, Dave (NK7Z)
https://www.nk7z.net ARRL Volunteer Examiner
ARRL Technical Specialist ARRL Asst. Director,
NW Division, Technical Resources On 5/5/20 2:33
PM, Eric Norris wrote: > 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 >
<[email protected]
<mailto:[email protected]>>
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 > >
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