[Elecraft] KPA500 Faulting on high SWR on power rise

[hawley, charles j jr]

Are the Alpha surge protectors different than the arc plugs in the Delta-4 switches? I've never had an issue with those at high power.
Are they designed to operate at a low impedance (50 ohms) which would present a much lower voltage peak?
Or could the arc plug in them become damaged and cause them to arc at a much lower voltage?

Chuck Hawley
 c-hawley at illinois.edu

 Amateur Radio, KE9UW
 aka Jack, BMW Motorcycles
________________________________________
From: elecraft-bounces at mailman.qth.net [elecraft-bounces at mailman.qth.net] on behalf of Chris Hallinan [challinan at gmail.com]
Sent: Saturday, February 24, 2018 9:32 AM
To: Wes Stewart
Cc: <elecraft at mailman.qth.net>
Subject: Re: [Elecraft] KPA500 Faulting on high SWR on power rise

Hi Wes. Appreciate the feedback.  I'm certainly not impressed by having one
marked HP that is clearly not.  See my earlier post: the surge protector
was my problem all along.  It's arcing at about 300W.

Do you have a suggestion for alternatives?  I live in the lightning capital
of the world ;)  Lightning mitigation is not optional here.

Chris K1AY

On Sat, Feb 24, 2018 at 9:39 AM, Wes Stewart <wes_n7ws at triconet.org> wrote:

> Regardless, I would get rid of those. Pity I can't post pictures here of
> my examination of the two I bought and returned.
>
> Wes  N7WS
>
>
> On 2/24/2018 6:36 AM, Chris Hallinan wrote:
>
>> ...
>> I am running through a surge protectors from Alpha Delta.  I will double
>> check is is not the 200W versions!  Hmmm, now that I think of it, maybe
>> that's it???   ...
>>
>> 73 de K1AY
>> Chris
>>
>>
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