VHF Spectrum Release

70.5 – 71.5 MHz

2-April-2015: Ofcom have agreed the use of 70.5 MHz to 71.5 MHz by radio amateurs for digital experimentation.

Use will be permitted only via a Special Research Permit and further details of the application process will be published in due course. See Here for further information


146 – 147 MHz

The 146-147 MHz band was made available to Full Licensees only (including Club/Reciprocal), by a NoV  for October 2014-2015. For the latest 2015-2016 version, Ofcom has agreed to a Society request that means the  exclusion of certain NGR squares as per the map opposite is no longer an explicit restriction. However in order to achieve compliance with the condition re the ‘HCM agreement’, those squares are where particular caution is still required. Achieving compliance with the HCM condition may require lower power than 25W erp, or use of directional antennas that must beam away from international borders.

NoV restrictions include absolute band limits, and a band limit of 146.9375MHz in or within 40km of Scotland, as well as compliance with the HCM agreement. Power is 25W erp max and the maximum permitted antenna height is 20m above ground level.


Further information on the Harmonised Calculation Method (HCM) agreement referred to in the NoV is available here



The original Ofcom call for input regarding VHF spectrum was in 2012. Our joint input developed in the Spectrum Forum was based on innovative digital communications:-

On 10th October 2014 Ofcom published a statement confirming their proposals for the release of VHF Spectrum in the 143-169MHz range. This included a proposal regarding temporary amateur use of 146-147 MHz, based on our previous submissions in 2012 and 2014 (see background below).



  • The 2014 RSGB Convention Presentation above provides an overview of the opportunity for innovation in 146-147 MHz.
  • The Society’s wider work in relation to spectrum management, including the 2012 response above, can be found by following:
    About Us > Committees > Spectrum Forum > SF-Papers and Consultations.