15 May Why is there more space available for DRM in VHF band II when it is completely full for FM? Where can DRM fit in such an over-crowded band? – Your Question Answered
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Why is there more space available for DRM in VHF band II when it is completely full for FM? Where can DRM fit in such an over-crowded band?
Between two FM stations there must be a considerable gap. In other, more technical words, centre-to-centre spacing of 800 kHz is required between two analogue FM transmitters (i.e., 600 kHz frequency gap). But a DRM digital transmitter can be installed at a spacing of only a 50 kHz frequency gap from an analogue FM transmission and/or another digital transmitter. Thus, DRM digital permits the operation of many more FM-band digital radio services, which in any case would be required particularly in major cities where the available spectrum is limited.