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.
70 MHz (4m) Necessary  UK Usage
  Bandwidth  
70.000-70.050 MHz   Propagation Beacons only
    70.030 MHz    Personal beacons.
70.050-70.250 2.7 kHz Narrow Band modes
    70.085 MHz    PSK31 centre of activity
    70.150 MHz    MS calling
    70.185 MHz    Cross-band activity centre
    70.200 MHz    SSB/CW calling
70.250-70.294 12 kHz All Modes
    70.260 MHz    AM/FM calling
70.294-70.500 12 kHz All modes channelised operations using 12.5 kHz spacing.
    70.3000 MHz   RTTY/fax calling/working
    70.3125 MHz   Digital modes
    70.3250 MHz   DX Cluster
    70.3375 MHz   Digital modes
    70.3500 MHz   Internet Gateway - can be used by RAYNET
    70.3625 MHz   Internet voice gateway
    70.3750 MHz   Can be used by RAYNET
    70.3875 MHz   Internet voice gateway
    70.4000 MHz   Can be used by RAYNET
    70.4125 MHz   Internet voice gateway
    70.4250 MHz   FM simplex - used by GB2RS news broadcast
    70.4375 MHz   Digital modes (special projects)
    70.4500 MHz   FM calling
    70.4625 MHz   Digital modes
    70.4750 MHz
    70.4875 MHz   Digital modes
     
LICENCE NOTES: Amateur Service 70.0-70.5 MHz   Secondary User: 22dBW permitted
                                Available on the basis of non-interference to other services (inside or outside the UK).
     
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.