CB Radio PLL List

The PLL or Phase Locked Loop, is the technology that transformed radio transceiver construction from relying on banks of crystals being mixed to generate the operating frequencies.

There are many and varied circuits and methods relying on different PLL and other (Integrated Circuit) IC’s with a few base frequency set xtals to select all those channels you want.

Many are common CB Radio folklore with the 02A, and 858 PLL’s being most popular in the early days of modifying your CB to get all those freeband frequencies that were so quiet just up the band towards the Amateur 10Meter allocation at 28.000 MHz. A few switches to open or close power to the input lines on the PLL could do wonders to get your CB going out of band either up or down from the legal Govt 40 Channels. And if you were smart enough to fit ThumbWheels on the BCD logic lines you could even have a cheat sheet that gave a three digit number that corresponded to a frequency.

As a Electronics tech at the time I had them fitted on all my CB radio’s as I was a DX hunter extreme and wanted to go triple nickel.

This list has been copied from the websites credited below, but I have seen this list on many sites, so can not say who originally created it for the good of all operators. One of the reasons I put it here was to see if anyone can come up with a circuit diagram or correct alignment info on the Pearce Simpson Super Bengall MK11. I have one that had a PLL problem that I have solved but now needs the TX/RX to be aligned properly as some of the slugs were broken and needed replacement. These were replaced with other similar but not same permeability slugs that I hope will tune in OK. Any advice appreciated. The list below does not give correct information on this make/model which has the following major tuneable components.

• VR 401 -VR 301(marked as AM Mod) VR 101 – VR102 – VR103 – VR104
• L701 – L101 -L102 – L104 – L105 -L106 – L107 – L110
• T101 -T104 -T105 – T301 – T302 – T303 – T401

SOME INFO I have come up with that does not seem to fit.

µPD861  (by Chassis Type) SSB Models:

• CDE Mark 26: <T14, L2, L5, Q19-AMC, R91-ALC>
• Contact PSC301: <L107, L104, VR802-AMC, VR102-ALC>
• Pearce-Simpson Super Bengal Mark II: <T14, L2, L5, Q19-AMC, R91-ALC>
• Pearce-Simpson Super Bengal MkII: <L38, TR24-AMC, VR11-ALC, VR10-AM PWR>
• Wagner 510: <L107, L104, VR802-AMC, VR102-ALC>

Super Bengal Mk II: sim. to Cobra 148GTL in…SAMS #249 = DONT THINK THIS IS CORRECT, or is it a similar PCB with different PLL and component id’s? Dual Conversion AM/SSB US/Australian Models: Cobra 148 GTL, 148 GTL-F, Cobra 2000GTL, 2000 GTL-WX, Pearce-Simpson Super Bengal MK II, President Grant (new), Madison (new), Uniden Grant, Grant XL, Madison: <L38, TR24-AMC, VR11-ALC, VR10-AM Power>   ButtFuzz’ PLL Peak Tweak KG4ZPN’s CB Tune by PLL Type There is no guarantee expressed or implied that the information contained herein is correct.  Use at your own risk. “Putting mo’ axe in yo’ co-ax since 1979!”  Information provided here is just that: information.  If you use it to break the law, then YOU, indeed, have broken the law.