I got this Central Electronics 20A off of E-Bay, it came as complete operation unknown IE; not checked.
The people selling it had no idea how to test it and could only say for certain that the tubes light up when the
unit is plugged in and turned on. I was very happy to acquire it as it completes the Central Electronics line-up
 of exciters for my station. I continued my search for the elusive 458 VFO to run both units I didn't think I
 would ever find one in very good shape, but E-Bay came through again!

Its also a real all band exciter covering from 160 Meters to 10 Meters and the modes are AM/SSB/CW/PM,
however there are no coils to change as its also a "Band Switched" exciter.

I cleaned it up and heres a picture of the versatile CENTRAL ELECTRONICS 20A EXCITER.