hello. i am relatively new to tube radios. have done alot of work on tube guitar amps but this is my first tube cb. i purchased this from a friend and i must say its in mint condition. everything works as it should. had all the original tubes still in it which i replaced with all new tubes. put the originals aside for a rainy day. as i said everything operates as it should with the exception of the s meter. when i key the radio the meter works fine. it doesnt show any receive signal though. the meter drops below zero once the radio is turned on and it begins to receive. now i purchased another of these very cheap for parts. parts radio also works fine but condition is bad. meter worked fine on that one so i did the easy thing and switched meters with the same result. i know its not a bad meter. not alot of info on these radios so i am posing the question to the pros out here. Anyone know where to start searching for the problem? any help would be appreciated. of course it doesnt effect the function of the radio but its one of those things that just bothers you when it doesnt work. we all have those. hey, thanks for any help you can throw my way..