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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