27 MHz CB27/81 Bandplan

The 27 MHz CB27/81 Bandplan is a list of the channel frequencies for UK-only FM CB radio CB radio in the United Kingdom.

Additional recommended knowledge

Guide to balance cleaning: 8 simple steps

What is the Sensitivity of my Balance?

What is the Correct Way to Check Repeatability in Balances?

Unlike the scheme used in the United States, and subsequently elsewhere in the world, the original UK 40 channels progress in order with 10 kHz spacing. These channels apply to UK-only radios meeting MPT-1320 (marked CB 27/81) and MPT-1382 (marked PR 27/97, these may also feature the additional 40 CEPT channels).

Frequency  Channel    Frequency  Channel
   in MHz  Number        in MHz  Number
~~~~~~~~~  ~~~~~~~    ~~~~~~~~~  ~~~~~~~
 27.60125  1          27.80125   21
 27.61125  2          27.81125   22
 27.62125  3          27.82125   23
 27.63125  4          27.83125   24
 27.64125  5          27.84125   25
 27.65125  6          27.85125   26
 27.66125  7          27.86125   27
 27.67125  8          27.87125   28
 27.68125  9          27.88125   29
 27.69125 10          27.89125   30
 27.70125 11          27.90125   31
 27.71125 12          27.91125   32
 27.72125 13          27.92125   33
 27.73125 14          27.93125   34
 27.74125 15          27.94125   35
 27.75125 16          27.95125   36
 27.76125 17          27.96125   37
 27.77125 18          27.97125   38
 27.78125 19          27.98125   39
 27.79125 20          27.99125   40

By convention, channel 9 is set aside for emergency use, channel 14 is a 'calling' channel, where one CBer can call someone else before they both move to another channel for the bulk of their conversation. Channel 19 is commonly used by mobile stations (in vehicles).