RSGB Band Plan (effective from 1st January 2015)
The following band plan is largely based on that agreed at IARU Region 1 General Conferences with some local differences on
on frequencies above 430 MHz.
144MHz (2m) Necessary  UK Usage
  Bandwidth  
144.000-144.025 MHz 2700Hz All modes - including Satellite downlinks
144.025-144.110 MHz 500Hz Telegraphy (including EME CW)
    144.050 MHz   Telegraphy Centre of Activity
    144.100 MHz   Random MS telegraphy calling (Note 1)
144.110-144.150 500Hz Telegraphy and MGM
    144.138 MHz   PSK31 centre of activity
    EME MGM activity     (Note 7)
144.150-144.180 2700Hz Telegraphy, MGM and SSB
144.180-144.360 2700Hz Telegraphy and SSB
    144.175 MHz   Microwave talk-back
    144.195-144.205 MHz   Random MS SSB
    144.200 MHz   Random MS SSB calling frequency
    144.250 MHz   GB2RS news broadcast and slow Morse
    144.260 MHz   USB. (Note 10)
    144.300 MHz   SSB Centre of Activity
144.360-144.399 2700Hz Telegraphy, MGM, SSB 
    144.370 MHz   MGM calling frequency
144.400-144.490   Propagation Beacons only
144.490-144.500   Beacon guard band
144.500-144.794 20 kHz All Modes  (Note-8)
    144.500 MHz   Image Modes centre (SSTV, Fax etc)
    144.600 MHz   Data Centre of Activity (MGM, RTTY etc)
    144.6125 MHz  UK Digital Voice (DV) calling (Note 9)
    144.625-144.675 MHz   See Note 10
    144.750 MHz   ATV Talk-back
    144.775-144.794 MHz   See Note 10
144.794-144.990 12 kHz MGM / Digital Communications 
    144.800-144.9875 MHz    Digital modes (including unattended)
    144.8000 MHz   Unconnected nets - APRS, UiView etc (Note 14)
    144.8125 MHz   DV Internet voice gateway (IARU common channel)
    144.8250 MHz   DV Internet voice gateway (IARU common channel)
    144.8375 MHz   DV Internet voice gateway (IARU common channel)
    144.8500 MHz   DV Internet voice gateway (IARU common channel)
    144.8625 MHz   DV Internet voice gateway (IARU common channel)
     
    144.9250 MHz   TCP/IP usage
    144.9375 MHz   AX25 usage
    144.9500 MHz   AX25 usage
    144.9625 MHz   FM Internet voice gateway
    144.9750, 144.9875 MHz   tbd (Note 11)
144.990-145.1935 12 kHz FM/DV   RV48 - RV63 Repeater input exclusive (Note 2) (Note 5)
145.200 12 kHz FM/DV  Space communications (e.g. I.S.S.) - Earth-to-Space
    145.2000 MHz   (Note 4) & (Note 10)
145.200-145.5935 12 kHz FM/DV   V16-V48 FM/DV simplex (Note 3) (Note 5) (Note-6)
    145.2250 MHz   See Note 10
    145.2375 MHz   FM Internet voice gateway (IARU common channel)
    145.2500 MHz   Used for slow Morse transmissions
    145.2875 MHz   FM Internet voice gateway (IARU common channel)
    145.3375 MHz   FM Internet voice gateway (IARU common channel)
    145.5000 MHz   FM calling (Note 12)
    145.5250 MHz   Used for GB2RS news broadcast.
    145.5500 MHz   Used for rally/exhibition talk-in
    145.5750, 145.5875 MHz  (Note 11)
145.5935-145.7935 12 kHz FM/DV   RV48 - RV63 Repeater output (Note 2)
145.800 12 kHz FM/DV   Space communications (e.g. I.S.S.) - Space-Earth
145.806-146.000 12 kHz All Modes - Satellite exclusive
     
Note 1: Meteor scatter operation can take place up to 26kHz higher than the reference frequency.
Note 2: 12.5kHz channels numbered RV48-RV63. RV48 input = 145.000 MHz, output=145.600 MHz.
Note 3: 12.5kHz simplex channels numbered V16-V46.   V16=145.200 MHz.
Note 4: Emergency Communications Groups utilising this frequency should take steps to avoid interference to ISS operations
              in non-emergency situations.    
Note 5: Embedded data traffic is allowed with digital voice (DV)
Note 6: Simplex use only - no DV gateways
Note 7: EME activity using MGM is commonly practiced between 144.110-144.160 MHz
Note 8: Amplitude Modulation (AM) is acceptable within the All Modes segment. AM usage is typically found on 144.550MHz.
              Users should consider adjacent channel activity when selecting operating frequencies
Note 9: In other countries IARU Region-1 recommend 145.375 MHz
Note 10: May be used for Emergency Communications and Community Events
Note 11: May be used for repeaters in other IARU Region-1 countries
Note 12: DV users are asked not to use this channel, and use 144.6125 MHz for calling.
Note 13:  not used  
Note 14: 144.800 use should be NBFM to avoid interference to 144.8125 DV Gateways
   
LICENCE NOTES: Amateur Service and Amateur Satellite Service - Primary User. 
                                Beacons may be established for DF competitions except within 50 km of TA 012869 (Scarborough)
     
Notes to the Band Plan
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.