Re: KPA500 Clicks & Pops
Posted by
Ed Pflueger on
Oct 16, 2018; 9:34pm
URL: http://elecraft.85.s1.nabble.com/KPA500-Clicks-Pops-tp7645665p7645698.html
Mine was a kit and does the same thing. Sort of like Railroad Welded Rail, in the summer it expands and shrinks in the winter. We had the same issue with #6 solid copper on the communications lines. It only does it on the KPA500 when I do a lot of RTTY or FT8. Very seldom on SSB or CW.
ED..AB4IQ
-----Original Message-----
From:
[hidden email] [mailto:
[hidden email]] On Behalf Of Dennis Moore
Sent: Tuesday, October 16, 2018 4:14 PM
To: Elecraft Reflector <
[hidden email]>
Subject: Re: [Elecraft] KPA500 Clicks & Pops
I rarely hear anything from my KPA500-F. Serious question, I wonder if those with the kit experience more noise than those with factory assembled units?
Dennis NJ6G
On 10/14/2018 19:52, Bob McGraw K4TAX wrote:
> What is the recommended solution to stopping the clicks and pops from
> the KPA500 as the amp heats during transmission and cools during
> receive? I've seen one that suggested replacing the screws in the Z
> bracket with 4-40 x 1/4". Any traction to this?
>
> The amp performs absolutely fantastic. The clicks and pops are more
> annoying when working high duty cycle modes.
>
> Thanks in advance.
>
> 73
>
> Bob, K4TAX
>
> KPA500 s/n 3519
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