[GreenKeys] WTD Dovetron TSR-300D instructions and/or schematics

[Nick England]

I picked up a Dovetron at the Shelby hamfest - it has a TSR-300D card that
includes regen plus SELCAL - it isn't clear what all the switches do, so if
anyone has instructions, that would be very helpful.
There is info on line covering the TSR-200D and TSR-500D but this variant
is somewhat different.

This document has a brief description of the various TSR models including
page 33 on the 300D.
https://www.qsl.net/w6ger/pdfdocs/dovetron/SelectionGuide.pdf

best regards,
Nick England K4NYW
www.navy-radio.com
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