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.

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). In 2006, the UK 27/81 Bandplan was introduced by the Republic of Ireland's Comreg as one of two sets of channels available for the Wireless Public Address System (WPAS) licencing scheme (similar to the UK's CADS - Community Audio Distribution System), as many Irish churches were already illegally using UK 27/81 CB equipment for this purpose.

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).