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What is the difference between DRM, DRM30 and DRM+, and what role does the DRM Consortium play?

April 26, 2017difference DRM play

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What is the difference between DRM, DRM30 and DRM+, and what role does the DRM Consortium play?

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DRM (Digital Radio Mondiale) is the overall name of the system for digital radio broadcasting, typically carrying one service per frequency. The DRM system is standardized by ETSI (www.etsi.org) as ETSI ES 201 980 “Digital Radio Mondiale (DRM); System specification”. The DRM system operates over a wide range of broadcast frequencies and therefore has different transmission parameters designed to deal with the conditions experienced in these bands. Although the applications carried by the DRM system, namely audio and data services, are the same for the whole DRM system, the technical parameters essentially fall into two categories according to the transmission frequency of the broadcast: DRM30 is used for transmissions using the broadcast frequencies below 30 MHz (i.e. long, medium and short wave) with a channel bandwidth between 4.5 and 20 kHz; DRM+ is used for transmissions using the broadcast frequencies above 30 MHz (i.e. VHF band I, band II FM) with a channel bandwidth of 100 kHz.