It is thermal expansion and contraction as the metal temperature
changes. When I first got mine, new from Elecraft, it had a case of
the snap, crackle, and pop syndrome. After a few weeks the issue
disappeared. Haven't heard it since and the amp is used every day.
73
Bob, K4TAX
Message: 9
Date: Mon, 20 Sep 2021 14:27:41 -0700
From: Dana Roode K6NR<[email protected]>
To: Elecraft Reflector<[email protected]>
Subject: [Elecraft] KPA500 Clicking Noise
Message-ID:
<CAEhu_sw-1r4hMpd3QFC_ek5yAM6=5uU5ZjsaKHSzcy=s8tt...@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
I hadn't used my KPA500 for awhile, but I put it on the air recently. It's
working fine with my K3, but after it warms up - 40 degrees C or so - I
start to hear a faint clicking noise. It is coming from the vicinity of
the fan and heat sinks. There is a click every 10 seconds or so, I think
whether I am transmitting or not. Fan control is working fine, and I
bumped up the lowest speed to help keep the amp cooler.
Let me know if anyone has seen this before. Meanwhile, I will keep using
it and see how it goes.
Dana, K6NR
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
