[Elecraft] KPA500 protection

[Michael Walker]

Hi Andy

I blew my 6M Caps one day, but it was 100% my stupidity when I kept
bombarding it with a full 100w carrier when I had the amp to go 'online'
when it was turned on.  This is a firmware setting.  It tripped off the
first time.  I reset it and hit it again (not thinking) and the CAPs blew.
I fixed it myself and all I had to do is replace the caps (and repair the
board).

I ran mine for years on my remote and made many many mistakes and never had
an issue and I tripped it offline a ton of times.

In the emails you saw today, you need to ask about the mechanics of the
failures first.

Mike va3mw


On Thu, Mar 18, 2021 at 3:12 PM Andy Durbin <a.durbin at msn.com> wrote:

> Two post today about KPA500 that seem to have been damaged because the
> built in protection was inadequate.  What's going on?
>
> In my station the KPA500 is protected against stupid errors that cause
> high SWR by the KPA500 itself, by my KAT500, by my LP100A, and by my
> Arduino controller.  I hope one of these will stop the smoke getting out.
>
> 73,
> Andy, k3wyc
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