Hi All,

Just picked up like new TRC-231 but it has weak modulation. Otherwise
looks to be a nice radio.

Radio Shack list the parts for the rig but never post a schematic.

Any one know about how to fix the weak modulation (really weak mod) as
I have read that these units run low. I believe that there is a
defective part.

How about a schematic?

de KKIOM