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Re: [Amps] warbleing gi-7

To: "'Glen Zook'" <>, "'Terry P'" <>, <>, "'KC5GTTCarey Lockhart'" <>
Subject: Re: [Amps] warbleing gi-7
From: "Sam Carpenter" <>
Date: Tue, 21 Feb 2012 11:45:39 -0500
List-post: <">>
Agreed, I think he should look at the shielding on the audio inputs or any
other input on his xcvr and also the station earth ground. It will need to
be low impedance with short as possible run of silver braid, copper
strapping,#6 stranded or #2 stranded if longer than 10' or the like. Also
will want a good 8' ground rod. He should have a transmission line ground
kit at the entrance to the shack going to a common ground. Stray RF will do
all kinds of funny audio things and burn you sometimes too.

-----Original Message-----
From: [] On
Behalf Of Glen Zook
Sent: Tuesday, February 21, 2012 11:01 AM
To: Terry P;; KC5GTTCarey Lockhart
Subject: Re: [Amps] warbleing gi-7

It may be r.f. getting back into his exciter from the fact that more power
is now being used.
Glen, K9STH


 From: Terry P <>
To:; KC5GTTCarey Lockhart <> 
Sent: Sunday, February 19, 2012 4:26 PM
Subject: Re: [Amps] warbleing gi-7

--- On Sun, 2/12/12, Carey Lockhart, KC5GTT <> wrote:

From: Carey Lockhart, KC5GTT <>
Subject: [Amps] warbleing gi-7
Date: Sunday, February 12, 2012, 6:51 PM

Hello Guys,

Just sent a little 2m gi7b amplifier to a ham in idaho. he is getting a
report of a warble in his audio with the amp in. to me that sound like
arching cap what do yall think?

Carey, kc5gtt
Amps mailing list

Carey , 

If this amp is large enough to pull down the AC mains , this could effect
the exciter . 

This would depend on things like the operator using AC power strips and so
one . 

Just a thought

Terry N0PGR
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