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Celebrating 40 years of service to CBers around the world!

Read our Web pages in SPANISH, GERMAN, FRENCH, ITALIAN, PORTUGUESE & other languages with Altavista's Babel Fish translation site! Click here to try it out!

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Welcome, CB radio hobbyists!  Since 1976 we’ve been the leader in CB Radio books, plans, kits, modifications, & technical information.  We specialize in unique, hard-to-find performance options for Citizens Band, 10-Meter, & HF radios.


                                                                                                   BACK IN STOCK NOW!

Click Below To Download Book Samples!
The “Screwdriver Expert’s” Guide (239Kb ZIPped PDF)
The CB PLL DATA Book (136Kb ZIPped PDF)
Understanding & Repairing CB Radios (866Kb ZIPped PDF)

About the author (Lou Franklin)

Dynamic Speech Processor Kit
Blows Their Ears Off!

Tripower Broadband Linear RF Amplifier
22-Page Detailed Construction Plans


Dynamic Speech Processor-talk power for CBs

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 All About How Audio Speech Clipping Works

Click here for Schematic Diagram

FREEBIE! Specific Power & Modulation Tweaks for PLL CBs.
Straight from Appendix F of our "Screwdriver Expert's Guide", this lists thousands of CB radios alphabetically by the PLL chip they use.  Find your CB model in the list and you'll see exactly which coils, controls, or parts to tweak for maximum RF power output and modulation.
NEW! The GALAXY & RANGER Service Manual, Second Edition.
We've expanded this popular book to include tech details on even more models.
FREE DOWNLOAD! Secrets of Broadbanding
You just modified that CB to expand its frequency range. But it doesn't want to tune more than a few channels up or down from the FCC band without quitting.  This illustrated reference includes  many broadbanding tricks used by the pros to cover more frequencies.  You won't find this information anywhere else!

FREE DOWNLOAD! Mike Wiring Guide.
Need to rewire a mike or add a power mike?  We tell you exactly how to do it.  Find out the functions of each mike socket pin or mike cable wire, cure squeals, etc.
FREE DOWNLOAD! CB Crystal Mixing Charts (each 20K PDF).
Includes 95% of all mobile & base crystal-synthesized CBs!  Use these 36 charts to figure out those "dead channel" or "dead channel group" symptoms in the older models, or figure your own new frequencies for modifications.  Download and print for a handy reference!
FREE DOWNLOAD! Channel & Frequency Chart (14Kb PDF).
Free 1-page download covers Ch.1–40 in standard band, plus 7 other bands, 4 down and 3 up.  Total range shown is 25.165–28.755 MHz.

Learn advanced frequency modifications using these amazing programmable chips.  This 60-page manual picks up where THE CB PLL DATA BOOK leaves off.   Even includes PC board artwork to make your own modification circuits for many popular PLL chips.  The EPROM book's now out of print, and this free download is the only way to learn about this subject!

Please browse this Web site or download our paper catalog in