[Amps] warbleing gi-7

[Carey Lockhart]

i agree with all the sugestions you have presented guys. i had him check
the bias voltage, but i am not sure if he understood my instructions. he
did ground the rig and amp. how well i dont know. i am very diapointed that
my amplifiers have not been more UPS proof. that makes two now that have
had quirks after shipping. thanks

Carey, kc5gtt

On Tue, Feb 21, 2012 at 10:45 AM, Sam Carpenter
<Sam at owenscommunication.com>wrote:

> 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: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
> Behalf Of Glen Zook
> Sent: Tuesday, February 21, 2012 11:01 AM
> To: Terry P; amps at contesting.com; 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
>
>
> Website:  http://k9sth.com
>
>
> ________________________________
>  From: Terry P <n0pgr at yahoo.com>
> To: amps at contesting.com; KC5GTTCarey Lockhart <kc5gtt at gmail.com>
> Sent: Sunday, February 19, 2012 4:26 PM
> Subject: Re: [Amps] warbleing gi-7
>
>
>
> --- On Sun, 2/12/12, Carey Lockhart, KC5GTT <kc5gtt at gmail.com> wrote:
>
> From: Carey Lockhart, KC5GTT <kc5gtt at gmail.com>
> Subject: [Amps] warbleing gi-7
> To: amps at contesting.com
> 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
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>
>
> 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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>


-- 
Carey Lockhart, KC5GTT
Boerne, Tx. 78006
www.kc5gtt.com