[Amps] Ameritron AL-1500 Problem (Mike Schatzberg)

[R.Measures]

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 at bellsouth.net>
> To: <amps at 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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>

Richard L. Measures, AG6K, 805.386.3734.  www.somis.org