Pete KE9OA wrote:
I saw an eBay listing for a Lear ADF. It looked surprisingly like a Bendix
T-12B, also known as an ADF-201B. This particular model has the tuning dial
right in the center of the front panel, and it is a solid state unit. The
only difference it that the Bendix unit uses a 140kHz I.F. I do have service
information for this model.



If the folklore passed on to me in about 1965 is correct, Motorola
bought the Lear ADF design and made it the ADF-12. Bendix got the
design from Motorola and came out with the ADF-T12-series. There
certainly are striking similarities as one might expect. Tye worst of
the lot is/was the synthesized ADT-T12D. It is an abomination. We took
the "D" out of our aircraft and re-installed a "C" model.

de K3HVG
also: N95JP