scope:

The present document applies to equipment operating with narrow channel separations (CSP) (less than 10 kHz) and intended for speech and/or data. It is the intention of the present document to cover any Channel BandWidths (CBW) permitted by National Administrations for such systems e.g. 6,25 kHz. In the present document different requirements are given for the different radio frequency bands, environmental conditions and types of equipment where appropriate. In the present document, data transmission systems are defined as systems which transmit and/or receive data and/or digitized voice. The equipment comprises a transmitter and associated encoder and modulator and/or a receiver and associated demodulator and decoder.