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The meter works on receive and also advances completely when placed in ALC but there is no i.c. value and adjusting the bias potentiometer does nothing. I cleaned the relay as suggested and it now keys and unkeys correctly. I also have 173 volts at pin 3 on the tube socket. Nothing has changed...

Perfect! That's why I asked. I ran some dry paper through it today thinking that might be an issue and it did stop it from hanging up when thrown into MOX during tune up. I'll swing by AutoZone and pick some up. I'm still having a no transmit problem and no bias that registers on the meter...

Joy. This would be my first....not my first dozen lol. You've given me something to think on. Is there something different than DeoxIT that you might try or have I done my due diligence in that department?

Thanks for the reply. Yeah I've done just that but with DeoxIT and paper. Do you think something else would be better suited for the job? They have original used relay sets on Epay at $75 for a set. I'm willing to give it a few more cleaning attempts but it sounds like it's more of a bandaid...

I have a Yaesu FT-101E with multiple issues but the battle I'm fighting at the moment is on the receive front. I identified the problem as being associated with the RL-1 relay. After a thourough cleaning I was able to get receive in all modes (no receive in AM and low in CW before) however the...

Just to recap what was found. Ultimately 3 transistors were found to be defective Q6, Q12 and Q13. A defective 10.625 Crystal was also found. The back swing on the meter was found to be the result of the meter wired backwards. After running the radio for a while transmit dropped out entirely on...

The schematic looks great!

OK sounds good. It says it is out for delivery at the moment. If it makes it I'll take a few pictures tonight and send them to you to see if they are adequate or if I need to make changes. If you give me the go then I'll go through and do the whole deal.

I think it is in Sam's Photofact CB-222. I would confirm first though.

Remarkably USPS got it here quicker. It is supposed to be delivered today....but you know how that goes. I will probably tinker with it a bit but there's no rush. We can pick it up again this weekend. I really do appreciate the help you've provided and for keeping me in the loop.

I guess we're both odd and that's why it makes sense to me lol

Makes perfect sense.

It's a right angle triangle. I forgot to mention I spoke with Astatic today and they confirmed we're good on the mic wiring so it would seem that the modulation issue is in the radio... that is assuming they are correct.

So I'm assuming this switch right here is a tone control but it acts more like a NB. On ch. 20 there is this oscillating sound that is present on say ch. 21 when the switch is in the middle. If I flip it to the - the tone decreases but the oscillating is still present. If I switch it to + it...

Mike's cb repair had one like that where the PA/CB switch was the cause of no TX/RX.

It It definitely is a bit wonky. Sometimes it takes a flip or 2 to move out of PA back to CB.

I'm totally good with exchanging emails. Disregard the squealing. It was the result of an amplified speaker I was using. I ditched it for a passive and it's gone. What I did find though is that if I'm in PA and key mic it transmits a carrier to the handheld. It's not as strong as in CB mode but...

So if I key the mic, while in PA, the locals on ch. 20 cut out and a high pitched whine is heard. Handheld is off. Sam's manual should be here next Thursday and I can send you pictures or scans. My scanner isn't that great so pictures will probably be clearer.

I just confirmed the cb is bleeding over to PA. There are locals on ch. 20 right now and if I switch to PA they can be heard through the external speaker plugged into the PA jack.

Found a big problem with the PA circuit.