I recently won a new-in-the-box Cobra 148 GTL in a raffle. Of course, it's one of the Chinese ones (exactly the same as the one Robb reviewed last year). I need another radio like I need a hole in the head, but I put it on the air for the heck of it and found that it's off frequency by about 200hz (which apparently is par for the course with these things). I'd like to try recalibrating it, but I want to have some schematics and/or the service manual for it handy first. I can find plenty of documentation on the original 5-pin 148 GTL on CBTricks.com, but I don't know how much (if at all) that applies to the Chinese edition. For example, I know that the original 148 GTL used the AN612 balanced modulator chip for SSB, but that part is obsolete so I suspect the newer radio uses something different. (I haven't taken the cover off mine yet.)
I've done some searching on the googles and on this forum but haven't found any leads. Does anyone know of a source for a schematic for the current Chinese Cobra 148 GTL, or is it a close enough replica that I can still use the original?
-Bill
I've done some searching on the googles and on this forum but haven't found any leads. Does anyone know of a source for a schematic for the current Chinese Cobra 148 GTL, or is it a close enough replica that I can still use the original?
-Bill