> From jono@pop3.enteract.com Tue Oct 13 16:07:02 1998
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> Subject: Re: [AMPS] SB-220 TUNE Cap Arcing
To: <amps@contesting.com>
> Date: Tue, 13 Oct 98 15:35:21 -0000
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> From: Jon Ogden <jono@enteract.com>
> To: "Norell Bennett W." <bnorell@lge.co.kr>
> cc: "amps@contesting.com" <amps@contesting.com>
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>
> >I haven't had a chance to tune up to see any difference yet.
> >If arcing still occurs, and if it is possibly parasitics
> >at 110MHz as Rich comments, what can be done?
>
> If the supressor resistors are OK, then my bet is that they are working
> fine and you don't have parasitics. You already have nichrome wires in
> there so adding Rich's wouldn't do anything for you.
>
> Carl, KM1H, suggested removing all of the mods you did and seeing how
it
> works. Perhaps something is amiss with them. If something is not
> assembled correctly on the input circuitry, you could be creating an
> instability there as well. This is probably not a bad idea. Then
> reinstall the mods one at a time and try to determine where the problem
> occured.
>
> Hope this helps.
>
> 73,
>
> Jon
> KE9NA
>
>
>
Jon,
I read that Carl suggested removing mods to go "original",
but following the input circuit changes per Rich's suggestions
to reduce VSWR (reducing coil windings and changing in/out caps)
is pretty hard to undo. The VSWR is reduced dramatically, so
I don't know if the problem lies there.
Thanks for the thoughts.
Bennett
ko2ok
-------------------------------------------------------------------------
-
> Jon Ogden
>
> jono@enteract.com
> www.qsl.net/ke9na
>
> "A life lived in fear is a life half lived."
>
>
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