CB Radio Basics

Master the fundamentals of CB radio communication. This guide covers everything beginners need to know, updated for 2025.

What is CB Radio?

Citizens Band (CB) radio is a short-distance radio communication system operating on 40 channels in the 27 MHz band (26.965 to 27.405 MHz). Unlike amateur (ham) radio, CB requires no license to operate in the United States – and it’s still 100% legal in 2025!

New in 2025: AM/FM Dual-Mode Technology

The FCC has approved dual-mode AM/FM CB technology in the U.S., which means:

  • Clearer sound – FM mode reduces static and noise
  • Improved voice detail – Better audio quality on FM
  • Backward compatible – New radios still work with older AM-only units
  • Same antennas – No need to replace your existing antenna

The 40 Channels

CB radio uses 40 designated channels. Here are the most important ones:

  • Channel 9 – Emergency communications only
  • Channel 19 – Primary highway/trucker channel (most active!)
  • Channel 17 – North/South highway travel
  • Channel 10 – Regional trucking
  • Channels 1-7 – Local communication
  • Channels 36-40 – SSB (Single Sideband) operations

Power Output Limits

The FCC limits CB radio power output to:

  • AM Mode: 4 watts maximum
  • FM Mode: 4 watts maximum (new in 2025)
  • SSB Mode: 12 watts PEP (Peak Envelope Power)

Expected Range

With a properly tuned antenna:

  • AM Mode: 1-5 miles typical, up to 10+ miles in ideal conditions
  • FM Mode: Similar to AM, but with clearer audio
  • SSB Mode: 10-20+ miles typical

Top CB Radio Recommendations for 2025

Best Overall for Truckers

  • Cobra 29 LX MAX – The top choice for professional drivers. Features Bluetooth for hands-free calls, NOAA weather alerts, and noise-canceling technology
  • Cobra 29 LTD Classic – The trusted workhorse since the 1970s, known for reliability

Best SSB (Single Sideband)

  • President McKinley – Feature-packed with noise filters, LCD display, and channel scanning
  • Uniden Bearcat 980 SSB – NOAA weather, integrated SWR meter, dynamic squelch

Best Compact/Budget

  • President BILL – Compact with excellent speaker clarity
  • Uniden PRO520XL – Affordable and durable, great for beginners

Premium Option

  • Galaxy DX 959 – Professional-grade with SSB and all features

Basic Terminology

  • Squelch – Controls background noise; adjust until static disappears
  • SWR – Standing Wave Ratio; measures antenna efficiency
  • Modulation – How your voice is transmitted
  • RF Gain – Receiver sensitivity control
  • PTT – Push-To-Talk button on microphone
  • SSB – Single Sideband mode for extended range

Ready to learn more? Check out our Antenna Selection Guide!