Private Mobile Radio

Introduction

Private Mobile Radio (PMR) - sometimes called Professional Mobile Radio - was developed for business users who need to keep in contact over relatively short distances with a central base station / dispatcher - a typical example is a taxi company. PMR is also widely used by emergency services. PMR networks consist of one or more base stations and a number of mobile terminals. Such a system serves a closed user group and that is normally owned and operated by the same organization as its users.

From their early designs, PMR systems have developed into 'trunked' systems, the most notable of which is TETRA, Terrestrial Trunked Radio. Trunking is a technique where the resources of the communications network are shared, thus providing both flexibility and economy in the allocation of network resources. Typically, a communication channel is allocated for the duration of a call and then automatically released to allow it to be used for another call, perhaps between different users on the same system. The technique also enables multiple base stations to be connected and to provide coverage across a wider area than with a single base station.

PMR systems generally provide facilities for closed user groups, group call and push-to-talk, and have call set-up times which are generally short compared with cellular systems. Many PMR systems allow Direct Mode Operation in which terminals can communicate with one another directly when they are out of the coverage area of a network.

PMR systems may also be developed to allow public access (by subscription), and they are then known as Public Access Mobile Radio (PAMR). The users of PAMR systems are usually not the same as the system's owner and operator. Traditionally, PMR systems have usually been based on European standards for the equipment, but operated under licence and subject to National frequency management plans. An exception is PMR 446, a consumer 'walkie-talkie' which has six analogue channels allocated in most European countries for use without a licence.

Our Role & Activities

TETRA

TETRA, Terrestrial Trunked Radio, is a PMR/PAMR system developed by ETSI to respond to the increasing requirements of commercial services and emergency services, and to give the possibility for cross-border networks in Europe.

DMR

Digital Mobile Radio (DMR) is a new European standard, produced by ETSI, defining a direct digital replacement for analogue PMR.

Electromagnetic compatibility for PMR/PAMR

Electromagnetic Compatibility (EMC) requirements for PMR/PAMR are covered by EN 301 489 part 1 and part 5.

Spectrum requirements for PMR/PAMR

ETSI works with the relevant European organizations to ensure that appropriate spectrum is available for ETSI radio standards. The Institute has produced a series of System Reference Documents that define the spectrum requirements for various PMR implementations, and a range of Harmonised Standards that may be used to demonstrate compliance of equipment and components with the European Commission's Radio Equipment Directive.

Standards

The following is a list of the latest published ETSI standards on Private Mobile Radio.

A full list of related standards in the public domain is accessible via the ETSI standards search. Via this interface you can also subscribe for alerts on updates of ETSI standards.

For work in progress see the ETSI Work Programme on the Portal.

Standard No. Standard title.
EN 303 039 Land Mobile Service; Multichannel transmitter specification for the PMR Service; Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU
TS 102 658 Digital Private Mobile Radio (dPMR) using FDMA with a channel spacing of 6,25 kHz
TS 102 658 Electromagnetic compatibility and Radio spectrum Matters (ERM); Digital Private Mobile Radio (dPMR) using FDMA with a channel spacing of 6,25 kHz
EN 303 039 Electromagnetic compatibility and Radio spectrum Matters (ERM); Land Mobile Service; Multichannel transmitter specification for the PMR Service; Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive
TR 102 884 Electromagnetic compatibility and Radio spectrum Matters (ERM); digital Private Mobile Radio (dPMR) General System Design
TS 102 658 Electromagnetic compatibility and Radio spectrum Matters (ERM); Digital Private Mobile Radio (dPMR) using FDMA with a channel spacing of 6,25 kHz
TR 102 884 Electromagnetic compatibility and Radio spectrum Matters (ERM); digital Private Mobile Radio (dPMR) General System Design
TS 102 658 Electromagnetic compatibility and Radio spectrum Matters (ERM); Digital Private Mobile Radio (dPMR) using FDMA with a channel spacing of 6,25 kHz
TS 102 658 Electromagnetic compatibility and Radio spectrum Matters (ERM); Digital Private Mobile Radio (dPMR) using FDMA with a channel spacing of 6,25 kHz
TR 102 627 Electromagnetic compatibility and Radio spectrum Matters (ERM); System Reference Document; Land Mobile Service; Additional spectrum requirements for PMR/PAMR systems operated by railway companies (GSM-R)
TR 102 433 Electromagnetic compatibility and Radio spectrum Matters (ERM); Digital Private Mobile Radio (DPMR) using a channel spacing of 6,25 kHz and operating in specified VHF and UHF bands under general authorization without individual rights; System reference document
TR 102 433 Electromagnetic compatibility and Radio spectrum Matters (ERM); Digital Private Mobile Radio (DPMR) using a channel spacing of 6,25 kHz and operating in the frequency range from 446,1 MHz to 446,2 MHz under general authorization without individual rights; System reference document
EN 301 489-5 Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 5: Specific conditions for Private land Mobile Radio (PMR) and ancillary equipment (speech and non-speech)
ETS 300 279/A1 Radio Equipment and Systems (RES); ElectroMagnetic Compatibility (EMC) standard for Private land Mobile Radio (PMR) and ancillary equipment (speech and/or non-speech)
ETS 300 279 Radio Equipment and Systems (RES); ElectroMagnetic Compatibility (EMC) standard for Private land Mobile Radio (PMR) and ancillary equipment (speech and/or non-speech)