My interest in CB conversions began some years after Lou Franklin first published his"Screwdriver Expert's Guide" and "The CB PLL Data Book". Consequently I was able toread these and progressed quickly from having a passing interest in CB to actually runninga repair business and publishing a quarterly newsletter for like-minded individuals. Lou'sbooks have been a guiding influence in my hobby-turned-business and I am in no wayputting them down when I suggest that they lack just one important chapter. I hope that thisbook will fill that gap and help you as much as Lou's books helped me.This book assumes that you have read "The CB PLL Data Book" and have a basic grasp ofthe way in which a PLL frequency synthesiser works. The use of an Eprom will allow youto utilize the standard channel switch but to program the codes which will make the rigoperate on whatever channels, in whatever order, that you wish (within the limitations ofthe rig itself). Most modern AM or FM CB radios use a dedicated PLL whose codes cannot be altered. Sideband rigs, however, can almost always be converted for 10 meteroperation because they still use the type of PLL which has a wide choice of codes. Eventhose with dedicated PLLs can often be altered if an Eprom is used in conjunction with adifferent PLL.