If you need another whole amp or transmitter let me know, not interested in
taking a working one apart to rob the insulator.

tom


> [Original Message]
> From: skipp025 <[EMAIL PROTECTED]>
> To: <Repeater-Builder@yahoogroups.com>
> Date: 2/25/2008 12:08:05 PM
> Subject: [Repeater-Builder] Re: Motorola TLD6612A amp repair
>
> Hi John, 
>
> > "kf0m" <[EMAIL PROTECTED]> wrote:
> > I am working on repair of a TLD6612A  2 meter repeater amp 
> > that runs a pair of 8560AS tubes. 
>
> Should be quite the smokin' signal when you have the amplifeir 
> in line. 
>
> > It worked fine for a number of years and then suffered
> > what appeared to be lightning damage.
> > 
> > The insulator between the plate line and the plate tuning 
> > disc was arced through among other damage. It is a rectangular 
> > piece of clear material that looks like mica. 
>
> If it is a clearish but dark material it probably is mica. If 
> it's the thicker white insulating material it might be beryllium 
> oxide, which has danger warnings about breathing any dust from 
> the material when drilling or cutting into it. 
>
> > I tried adding some Teflon tape to cover up the puncture.
>
> Nope, ain't gonna work. 
>
> > When I fired up the amp today, It arced through again during 
> > the tune up process.  Anyone have suggestions for a replacement 
> > or have one in their junk box?
> > 
> > John Lock
> > kf0m at arrl.net
>
> Google mica sheet and or look at companies like McMaster Carr. You 
> can often find small sheets and parts at woodstove and appliance 
> repair places/stores. 
>
> www.antiquestoves.com is one place I found some mica sheeting
> available on line. 
>
> And of course I searched "mica sheet" on Ebay and hit 10 or so 
> supply sources right off the starting line. 
>
> cheers, 
> s. 
>
>
>
>
>
>
>
>
>  
> Yahoo! Groups Links
>
>
>
>
>
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2/21/2008 4:09 PM


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