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I did but the problem is still there.

No expo kit. It had thec11.1125 crystal relocatedcalongvwith a 10.something for lowers and a 13.something for uppers. All tied in with 3 20pf caps and soldered to the spot that the 11.11125 was in. The clarifier was one side to ground and the other to a constant 8v source near the pll chip. No...

Lol. Im full of typos. Especially uding the phones keyboard. I always hit c v b x and n instead ofvthe spacebar

Ok. I'll replace it in the morning.

Pf pico

I'll check that. The L20 is the AM? I can tune the 2 cans but like I said im up by 10khz on each channel. Would you happen to know the value of ct3? The sams only gives me a part number. Mine was swapped out. I tried a few, 20nf, even a 70nf. Nothing changed.

Yes. The 1125

Thats cool but the 10k shift throws some of my channels into the A channel area. I did think about doing that mod but when I got into testing transmit and receive, I saw that I couldnt communicate between the walkie and the 142 due to the A channel skips.

All great info but how do theybstrip off the 10kz when all is said and done? Thats possibly how my 10khz stays coupled along the path somewhere. Tomorrow I will check all the points where these freqs are and see where my 10k stays added that will be where the problem part is. Great info Brandon!

That is amazing work!

Such great info. Is this stuff available for all CB radios? Or did you do this in excel?

Thats amazing. Im gonna print these out and study them. Thanks Brandon!

They are all shifted by 10k.im thinking its the VCO area. Mind you, this was someone's hack job. Its a real mess. If I had some base figures to look for it would make it a bit easier. I mean, the sams shows thevtruth tables and voltages all over but no frequency points to look for. With all the...

The truth table checks out on all channels. The freqs are all up by 10k. Not down by 10k. I tested it for receive using my walkie as the transmitter. I pick up channel 1 by transmitting channel 2. So transmitting my walkie on 38, comes up on 39 on the 142. When I hit the channel skips like 3a...

Some issue withbthe clarifier as well. At 9 o'clock it drops out. Even when aligned to the 5 volts I lose my transmit. If I field adjust L13 I can get Tx back but i losevtx on lower 5 or 6 channels. If I tweak it to get tx back, i lose the top few channels.

Ok so new findings. The truth table is correct on every channel minus the offsets caused by the alignment issue which I cannot do until I resolve the VCO. 5 volts is set as per the sams at tp9. So the multiplier is also correct at tp10. The 8719 checks out pin per pin as per truth table...

I found a 142 thread. Im gonna take this there. Many thanks to those who responded here.

On the 142 gtl, the mb8719 pins 15 and 16 are both high. I see this condition on channel 39. Ch 39 gives the correct combination for 38 I've tried everything to get L13 to tune into the correct channel pattern but its always 10k down. No disturbances were done in and around the 8719 and I get 8...

They are both high. I see this condition on channel 40. Ch 39 gives the correct combination for 38 I've tried everything to get L13 to tune into the correct channel pattern but its always 10k down. No disturbances were done in and around the 8719 and I get 8 solid volts on the 8719. Nothing...

I'll check that this morning. Thanks and 73s