you wrote:


It isn't the tuner hardware that is going to be a problem, as much as
designing the tuning algorithm that drives the hardware. Mark Johnson
did a very good job, reverse engineering the stuff that Bill Shield
brought west from Motorola Military back in the 70's for the SEA
Autotuners. SGC copied the SEA Firmware & Design enbank, for their
stuff. The best stuff, was the stuff Collins did for their Military
Autotuners. Starting from scratch is going to be a BIG design project.

There's a fair amount of moderately recent literature on efficient
algorithms for adjusting a tuner. I have a recent paper from Sun and
Fidler at Univ of York that looks interesting, but I haven't read it yet.
"High Speed Automatic Antenna Tuning Units" IEE Conf on Ant and Prop,
4-7 April 1995, page 218ff