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ok, seems like I solved without schematics. I'm not sure what I did is right, but it seems to work, and I'm quite satisfied.. I simply rearranged the components before mentioned so that when the hi/lo power switch is "low", only one resistor is used, while when "high" both are used in...

further evolutions.. I managed to transmit, but there are still many questions. First, I unsoldered all wires and resistors, so that I could understand exactly the switch functioning. The switch has 12 pins, and acts as three separate switches, with the following connections: switch off...

one more element: I noticed that, with the lo/hi power switch in the "low" position, I can get Larsen effect if trying to transmit with the microphone near the test radio speaker. This leads me to think there is some strange, wrong wiring that draws most of the power to the aformentioned...

uhu.. if we manage to fix it without the schematics, it'd be perfect :-) ok, I'll try to better explain. The radio is AM only AFAIK. It has a switch to commute from low to high transmission power, and a small internal power meter. If it's set on low power, it simply won't transmit; trying...

mh, you're confusing me. from what you say I assume 651 and 1-651 are not the same.. I don't have the radio at hand to check now, so I don't remember what's written on the back; on the front I'm sure the writing says "Royce CB651". thaks for the hint; alas it's again more than 20$ to have it...

hi everybody, I recently acquired a Royce 1-651 CB radio. I purchased it at a very cheap price, and I was not totally surprised to discover that while it receives fine, it's not able to transmit. After some basic tests on the final stage, I would need the radio schematics for further...