On Tue, 13 Oct 1998 10:41:31 EST "Norell Bennett W." <bnorell@lge.co.kr>
writes:
>>
>> >>As others have eloquently pointed out, it is possible to make the
>
>SB-220
>> >>arc just by mistuning it.
>> >
>> >Neither my SB-220 or my TL-922 will arc by mistuning into a 50 ohm
>> >termination.
>>
>> That is kinda goofy that some people say their amps will do that. I
>
>
>can
>> understand ARCing when you've got some strange sorta load and high
>
>VSWR,
>> but IMHO tuning into a proper load should not cause arcing in a
>"well
>> behaved" amp. If it does arc into a 50 Ohm load, my guess is
>something
>> is a little squirely.
>>
>> 73,
>>
>> Jon
>> KE9NA
>>
>
>Following up:
>I took apart the parasitic suppressors (nichrome wire and 2 100ohm
>resistors in parallel) and the resistors measure ok.
>
>I cleaned the TUNE C and sanded or filed what little black or
>roughness (from the arcing) I saw on a couple of fins.
>
>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?
Well since those are Rich's suppressors that are supposed to work I am
completely dumbfounded and stumped..........................
The same goes for those that believe you cannot mistune an amp into a
dummy load.
Heck, some fools even believe Clinton!
73 Carl KM1H
>
>thanks,
>Bennett
>
>
>
>
>
>
>>
>>
>
>-------------------------------------------------------------------------
>
>-
>> Jon Ogden
>>
>> jono@enteract.com
>> www.qsl.net/ke9na
>>
>> "A life lived in fear is a life half lived."
>>
>>
>> --
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>>
>>
>
>--
>FAQ on WWW: http://www.contesting.com/ampfaq.html
>Submissions: amps@contesting.com
>Administrative requests: amps-REQUEST@contesting.com
>Problems: owner-amps@contesting.com
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>
>
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