RSGB Bandplan (effective from 1st January 2007)
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.