Steve Lusardi wrote:

That is exactly the design used for aircraft magnetic compass repeaters. Typically they use a 400 to 600 Hz oscillator as a
reference.
Steve

Yes, however it is of little benefit on the RT, with the resolver on the
servo shaft, where a given servo shaft position equates to some 90
possible RT positions. If the resolver were connected directly to the RT
it might provide some benefit over and encoder, but not when mounted to
the servo. In this case I'd recommend Iggy just replace the resolver
with another encoder, and sell the resolver to someone who needs it for
a tidy profit.