This preferred value is determined by the desirability to provide for high-capacity systems with a great number of
channels. However, in some systems, greater transmitheceive frequency separation might be required.
ITU-R M.SERIES PT 1-1995 history
1995ITU-R M.SERIES PT 1-1995 1995 M Series Fascicle - Part 1 Land Mobile Service Excluding Future Public Land Mobile Telecommunication Systems (FPLMTS)