CB Radio

From HFUnderground

Revision as of 18:14, 14 February 2024

For more information, see the detailed CB page here.

American CB radio band plan. This is the same band plan used by most countries worldwide, including all of North America, South America, Europe, the UK, Australia and numerous other locations.

US regulations limit RF output power to 4 watts in FM mode, 4 watts AM carrier power and 12 watts SSB PEP (peak power). 4w AM carrier power equates to 16 watts peak power (PEP) at 100% modulation.

US regulations permit use of AM, FM and SSB voice modes. AM mode must be full carrier double side band with a maximum bandwidth of 8 kHz. FM mode is limited to 8 kHz bandwidth. SSB mode may be USB or LSB. Regular suppressed-carrier SSB as well as reduced-carrier SSB and full-carrier SSB (AME) are all permitted, with a maximum bandwidth of 4 kHz.

FCC CB regulations require that all CB equipment has the capability to operate in AM mode as the "default mode". In Europe, FM is the "default mode".

The CE (CEPT) Europe-wide standard 27 MHz band CB radio regulations permit FM voice mode only (4 watt power limit). EU mode is identical, except AM and SSB are also allowed (same requirements as the US FCC CB band).

40 channel CB radio band plan.

Channel...............................................................Frequency (MHz)

• 1...................................................................... 26.965 MHz
• 2...................................................................... 26.975 MHz
• 3...................................................................... 26.985 MHz
• 4...................................................................... 27.005 MHz
• 5...................................................................... 27.015 MHz
• 6...................................................................... 27.025 MHz
• 7...................................................................... 27.035 MHz
• 8...................................................................... 27.055 MHz
• 9...................................................................... 27.065 MHz
• 10.................................................................... 27.075 MHz
• 11.................................................................... 27.085 MHz
• 12.................................................................... 27.105 MHz
• 13.................................................................... 27.115 MHz
• 14.................................................................... 27.125 MHz
• 15.................................................................... 27.135 MHz
• 16.................................................................... 27.155 MHz
• 17.................................................................... 27.165 MHz
• 18.................................................................... 27.175 MHz
• 19.................................................................... 27.185 MHz
• 20.................................................................... 27.205 MHz
• 21.................................................................... 27.215 MHz
• 22.................................................................... 27.225 MHz
• 23.................................................................... 27.255 MHz
• 24.................................................................... 27.235 MHz
• 25.................................................................... 27.245 MHz
• 26.................................................................... 27.265 MHz
• 27.................................................................... 27.275 MHz
• 28.................................................................... 27.285 MHz
• 29.................................................................... 27.295 MHz
• 30.................................................................... 27.305 MHz
• 31.................................................................... 27.315 MHz
• 32.................................................................... 27.325 MHz
• 33.................................................................... 27.335 MHz
• 34.................................................................... 27.345 MHz
• 35.................................................................... 27.355 MHz
• 36.................................................................... 27.365 MHz
• 37.................................................................... 27.375 MHz
• 38.................................................................... 27.385 MHz
• 39.................................................................... 27.395 MHz
• 40.................................................................... 27.405 MHz