Batboard

I have an older 2200B that I was using for field trips to the repeater sites that failed on it's last trip up the hill. It sounded like the receiver took off in an oscillation, but generate was gone also. Further investigation found that when set to 450 Mhz it was generating around 240 Mhz drifting all over the place. I swapped the RTC 1001B synthesizer module out with one from another 2410 I have access to, and the problem followed the module. It takes anywhere from 30 mins to 2 hrs running time for the problem to surface. My question is since I have no extender card or cables to work on this module does anyone know of a shop that could repair the module without the hassle and cost of shipping the entire monitor. Big M says for $1600 they can fix & cal it (and paint the scratched case!) but it's a beater field box, not worth that kind of money for a repair.
Thanks, Jack Kauker

Have you attempted repair already? If the synthesizer module requires a extender, I wouldn't bother attempting a repair, although I have built my own extenders for ISA-type connectors on other equipment.

I have checked with some shops and many require the full monitor to be sent. You might try NS Electronics in Georgia or Cardinal Electronics in Illinois.

My two bits worth:
The "A5" can be a real can of worms!
Using the manual, try various frequency settings to determine which circuit is at fault.
There are some reed relays that can cause problems.

By the way, the "A5" module in the R2001A,B,C are the same except for two electrolytics in the +/-33V line.