Hi,
Scott wrote:

That must have been a pretty popular model back in the day.......I've
seen no less than five of them at swaps recently in various states of
(dis)repair.

The Grebe Synchrophase was an amazing performer in its day, and
even now. I'd say it was the best unshielded TRF design ever made by
anyone. Grebe sold a lot of them, at $155.

73, Alan