Free tools
CB tools that do the math for you
Calculators and diagnostics for CB radio, 10 meter and installation work — size power wire, tune an antenna, track down a problem. No signup, nothing to install.
4live tools
23companion guides
Antenna Tools
Power & Wiring
Interactive toolLive
AM PeP to RMS Converter
Convert your Dosy RMS power meter into AM PeP with this easy to use tool
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Interactive toolLive
CB Radio Range Calculator
Realistic ground-wave range estimates for any antenna, terrain, and power level — plus upgrade scenarios showing what more antenna or watts really add.
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Learning Center
Want to go deeper?
23 guides on CB radios, antennas, installation and troubleshooting — written by our technicians. Find the why behind what this calculator tells you.
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We run these radios ourselves. Call 1-844-925-2688 (M–F 10–5 CST), or send a question and we will write back.