RSGB Bandplan (effective from 1st December 2006)
The following bandplan is largely based on that agreed at the 2005 IARU Region 1 Conference with some local differences on
frequencies above 430 MHz.
21 MHz (15m) Neccesary UK Usage
  Bandwidth  
21,000-21,070 kHz 200 Hz Telegraphy
    21,055 kHz   QRS (slow telegraphy) Centre of Activity.
    21,060 kHz   QRP (low power) Centre of Activity
21,070-21,090 500 Hz Narrow band modes
21,090-21,110 500 Hz Narrow band modes - automatically controlled data stations (unattended)
21,110-21,120 2.7 kHz All modes (excluding SSB) - automatically controlled data stations (unattended)
21,120-21,149 500 Hz Narrow band modes
21,149-21,151   IBP - reserved exclusively for beacons
21,151-21,450 2.7 kHz All modes.
    21,285 kHz   QRP Centre of Activity.  
    21,340 kHz   Image Centre of Activity.
    21,360 kHz - Global Emergency Centre of Activity
     
LICENCE NOTES:  Amateur and Amateur Satellite Service - Primary User.
     
Notes to the Bandplan
ITU-R Recommendation SM.328 (extract)
Necessary bandwidth: For a given class of emission, the width of the frequency band which is just sufficient to
ensure the transmission of information at the rate and with the quality required under specified conditions.
The use of Amplitude Modulation (AM) is acceptable in the all modes segments but users are asked to consider
adjacent channel activity when selecting operating frequencies.
Foundation and Intermediate Licence holders are advised to check their licences for the permitted power limits and
conditions applicable to their class of licence.