Thanks skip I didn't think about looking on E-bay but I also wasn't certain if it was Mica. It is some what clear and brittle and seems to be in thin layers that will flake off.
John Lock kf0m at arrl.net > -----Original Message----- > From: Repeater-Builder@yahoogroups.com > [mailto:[EMAIL PROTECTED] Behalf Of skipp025 > Sent: Monday, February 25, 2008 11:08 AM > To: Repeater-Builder@yahoogroups.com > 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 > > > >
