a) that high-capacity digital radio-relay systems of the order of 90 Mbit/s, 14OMbith or
synchronous digital hierarchy (SDH) bit rates are required in the 4 GHz radio-frequency (RF)
bands
ITU-R F.635-6-2001 history
2013ITU-R F.635-2013 Radio-frequency channel arrangements based on a homogeneous pattern for fixed wireless systems operating in the 4 GHz (3400-4200 MHz) band
2001ITU-R F.635-6-2001 Radio-Frequency Channel Arrangements Based on a Homogeneous Pattern for Radio-Relay Systems Operating in the 4 GHz Band
ITU-R F.635-6-2001 Radio-Frequency Channel Arrangements Based on a Homogeneous Pattern for Radio-Relay Systems Operating in the 4 GHz Band was changed to ITU-R F.635-2013 Radio-frequency channel arrangements based on a homogeneous pattern for fixed wireless systems operating in the 4 GHz (3400-4200 MHz) band.