Have an early model outdoor HF auto tuner from Motorola. Model T1820b It uses a diode config board.
This was a military tuner and is equipped with a 16 pin connector. Of course only 3 or 4 wires are actually used in more recent tuners like the AH-4 Icom.
I need to find the pin outs and configs for this tuner. It's in like new condition and would make a perfect long wire tuner for the KL7AIR Club Station if we can get it operational.
If you have a manual for this vintage tuner please scan the wiring diagram and diode board setup and email them to "firstname.lastname@example.org
Ron Keech KL7YK
Pres., Elmendorf Amateur Radio Society KL7AIR