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There are two sets of 40 CB channels that can legally be used in the UK
  • CB-27/81
    • Has 40 channels
    • Frequency allocation is almost unique to the UK
    • Not legal in most other countries
  • CB-CEPT
    • Has 40 channels
    • Legal in many countries
  • CB radios used in the UK can combine both sets of frequencies to create 80 channel rigs. These radios are not legal in most other countries.
  • UK CB radios operating in the UK can legally use AM, PM, FM, SSB or DSB. However the majority of CBs will only operate on FM.
  • The normal power limit for UK CB radios is 4W, However, 12W is permitted when using SSB modulation.
  • The UK experimented with a 20 channel sets using frequencies around 934 MHz. However, the 934 MHz band was withdrawn and use of the few surviving sets is now prohibited

CB 27/81 Frequencies

ChannelFrequency MHz
127.60125
227.61125
327.62125
427.63125
527.64125
627.65125
727.66125
827.67125
927.68125
1027.69125
1127.70125
1227.71125
1327.72125
1427.73125
1527.74125
1627.75125
1727.76125
1827.77125
1927.78125
2027.79125
2127.80125
2227.81125
2327.82125
2427.83125
2527.84125
2627.85125
2727.86125
2827.87125
2927.88125
3027.89125
3127.90125
3227.91125
3327.92125
3427.93125
3527.94125
3627.95125
3727.96125
3827.97125
3927.98125
4027.99125

CEPT Frequencies

ChannelFrequency MHz
126.965
226.975
326.985
427.005
527.015
627.025
727.035
827.055
927.065
1027.075
1127.085
1227.105
1327.115
1427.125
1527.135
1627.155
1727.165
1827.175
1927.185
2027.205
2127.215
2227.225
2327.255
2427.235
2527.245
2627.265
2727.275
2827.285
2927.295
3027.305
3127.315
3227.325
3327.335
3427.345
3527.355
3627.365
3727.375
3827.385
3927.395
4027.405
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