Re: LF: Decca component

["Rye Gewalt" <ryeg@sitestar.net>]

It could be a GE transorb which was a kind of a voltage limiter that was made by
GE about 25 years ago  -- it either is a MOV (Metal Oxide Varistor) or acts like
one.  I do know that they were red and looked like disc capacitors -- otherwise
I really don't remember much about them.

See:  http://209.134.106.21/articles/spike.pdf

Rye

"mike.dennison" wrote:

> I have at last fixed the PSU problem that killed one unit of my Decca Tx
> units a few months ago. I am at present running about 600W RF (75mW ERP)
> from two units, after using 100W RF for some time.
>
> The dead Tx unit still works but not very well. A component across one of
> the transistors burnt out. I have a diagram but do not recognise the symbol
> (perhaps a temperature variable resistor?). It is called R31V and the symbol
> looks like a preset potentiometer, but it looks just like a red disc ceramic
> capacitor.
>
> If anyone has a faulty Tx unit and can spare one of these components, can
> they send me one (I can supply my address by private e-mail)? Also, can
> someone explain what this red disc is, and what it does. Only two of the
> four transistors have it.
>
> With your help, I hope to run close to a kilowatt again and increase the ERP
> to 120mW!
>
> Thanks.
>
> Mike, G3XDV
> http://www.lf.thersgb.net
> ====================