Re: KPA500 Faulting on high SWR on power rise

Posted by ke9uw on Feb 24, 2018; 10:14pm
URL: http://elecraft.85.s1.nabble.com/KPA500-Faulting-on-high-SWR-on-power-rise-tp7638486p7638531.html

https://www.digikey.com/product-detail/en/littelfuse-inc/CG21000/F10878-ND/2024360

Chuck Hawley
 [hidden email]

 Amateur Radio, KE9UW
 aka Jack, BMW Motorcycles
________________________________________
From: [hidden email] [[hidden email]] on behalf of Chris Hallinan [[hidden email]]
Sent: Saturday, February 24, 2018 10:50 AM
To: [hidden email]
Cc: Wes Stewart; <[hidden email]>
Subject: Re: [Elecraft] KPA500 Faulting on high SWR on power rise

Not sure.  I pulled the plug out and Googled the numbers on it.  The plug
is labeled CG2 1000, which I think means it is a 1000V breakdown voltage.
It appears to be a Littlefuse device, according to Allied Electronics which
has the leaded version of the part for $2 ;)

Without knowing for sure, 1000V seems plenty for a 500W amp into
approximately 50 ohms load.  Note I have the surge protector on the low SWR
side of the tuner which is mounted under an eve of the house.  Probably not
ideal but that's another issue ;)

Chris



On Sat, Feb 24, 2018 at 11:06 AM, Don Wilhelm <[hidden email]>
wrote:

> Chris,
>
> What is the possibility that you have an HP suppressor body and a 200 watt
> Arc-Plug?
>
> 73,
> Don W3FPR
>
>
> On 2/24/2018 10:32 AM, Chris Hallinan wrote:
>
>> 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.
>>
>>

--
Life is like Linux - it never stands still.
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