On Oct 5, 2005, at 11:17 AM, Mike Schatzberg wrote:
> Wilson, your point is well taken, it could be you are right and the
> final is
> at fault. But before investigating such a significant and expensive
> problem
> as an intermittently open or shorted 8877, I would spend a few moments
> and
> check the more simple and common possibilities first, and then go
> onward
> from there.
Agreed. I would first perform the Funderberg gold-sputtering test to
see what's what with the grid.
http://www.somis.org/Goldmeltballs.html
> It is often worth considering Achems Razor, which says that
> "All things being equal the simplest answer must be correct." This
> doesn't
> always seem to work out for electronics. I would hope it is not the
> triode........
>
> 73,
>
> Mike
> WB2AJI
> ----- Original Message -----
> From: "Wilson Smith" <wsmithfl@bellsouth.net>
> To: <amps@contesting.com>
> Sent: Wednesday, October 05, 2005 2:01 PM
> Subject: Re: [Amps] Ameritron AL-1500 Problem (Mike Schatzberg)
>
>
>> How do you know the tube is good. I had the same problem last week
>> with a 3-500, i.e. intermitency, high input VSWR, full power when it]
>> worked, etc.
>>
>> In my case, an intermitten grid to filament short was the culprit.
>>
>> Wilson/W7GAM
>>
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>
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>
>
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
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