RSGB Band Plan (effective from 1st January 2024)
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.
122 GHz (2.5mm)                                                                             UK Usage
IARU Recommendation    
122,250-122.251 MHz IARU Region-1 preferred centre of activity  
Narrowband modes    
   
122,251-123,000 MHz 122,256 / 122,400 MHz - UK centre of activity
All modes    
     
LICENCE NOTES:  
122,250-123,000 MHz   Amateur Service only - Secondary User.  
                                       Note specific conditions apply within 50 km of SK985640 (Waddington) and SE202577 (Harrogate).
     
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.