BAD band switch. Partially refurbished. I rebuilt the switching power supply, all new electrolytics. Many new semiconductors. New switching controller ICs, diodes, FETs, etc. load tested.

Repaired bad amplifier IC on RF A15 board. NO ERRORS. However has BAD RYTHM. (A10) band switch displays frequency above 2.9GHz 30db down. No problems with anything other tag high band amplitude. Low band works fine. Any questions are welcome. Pics show response curve of low band 10MHz to 2.9 GHz, and various signals at higher frequency, including cable limitations. All buttons function, a few need harder pressing.