They were made in Refugio, Texas in the late 1960's thru the '70's.
There was a High VHF, Lo VHF and an Aircraft unit. They were tunable and
available with a separate squelch unit that attached to the receiver by
a motorola plug. The squelch units screwed to the bottom of the
receiver. It made for a nice compact radio that worked off your car
radio. Just set it to the end of the AM band and tune the dial!

They were one of the cheaper units available at the time and were very
reliable. I had all three but gave them away when I moved to an 895 XLT.

Wish I had them back; the'd be worth a mint on EBAY...!

Alain

On Fri, 03 Oct 2003 08:53:21 -0700, Alain wrote:

They were made in Refugio, Texas in the late 1960's thru the '70's.
There was a High VHF, Lo VHF and an Aircraft unit. They were tunable and
available with a separate squelch unit that attached to the receiver by
a motorola plug. ...

I still have a few Tompkins Radio Tunaverters
and published a photo of a 348S in October 2003
Monitoring Times (current issue).

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Bob Parnass, AJ9S GNU/Linux User http://parnass.com