UK Microwave Group

ALT The impact of M.2164 across the 23cm band If M.2164 is implemented across the entire 60 MHz available in the band, then the amount of viable spectrum (i.e. that is not subjected to a very restrictive power level) for the amateur service is reduced to 6.24 MHz. From this reduced bandwidth, 4 MHz is identified solely for narrow band applications. For broadband applications M.2164 identifies only 2.24 MHz which is shared with narrow band applications also. If all the technical measures in M.2164 are implemented in their entirety then 51.76 MHz of the current 60 MHz band become unusable for any realistic amateur application due the impractical low powers levels proposed.