[AMRadio] TR Switch

Peter Markavage manualman at juno.com
Mon Oct 30 13:51:31 EST 2006

If I remember correctly, there is a chart on the back side of the
instruction sheet, just above the schematic, that provides the voltage
information (AC and DC) that you need. As long as the physical
replacement fits into the cabinet with "close enough" voltages, that
would be the most important consideration.

Pete, wa2cwa

On Mon, 30 Oct 2006 11:49:52 -0600 Rick Brashear <rickbras at airmail.net>
> Does anyone happen to have a picture of the inside of the Johnson TR 
> Switch  250-39?  I have one I bought a while back that has been 
> modified 
> with a different power transformer (among other things!) and I don't 
> have any idea what the old one looked like.  The one they used is a 
> half 
> wave isolation transformer and the schematic calls for a full wave 
> transformer, but I don't know what voltage.  I would sure appreciate 
> any 
> actual pictures of the inside top and bottom.
> Thanks,
> Rick/K5IZ

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