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Devices pooled as Private Mobile Radios (PMR) and Land Mobile Radio (LMR) offer a two-way communication service that permits users to talk directly over a short distance or on a simple local system or even nation-wide complex system, without incurring any costs on the calls made – no matter how many or for how long.
Typical examples are radios for outdoor activities or the radio systems used by police forces and fire brigades.
Key features of professional mobile radio systems include:
- point to multi-point communications (as opposed to cell phones which are point to point communications)
- push to talk, release to listen - a single button press opens communication on a radio frequency channel
- large coverage areas
- closed user groups
- direct connection without system
- use of VHF- or UHF-frequency bands
Applicable standards in Europe:
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EN 300 086
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Analog radio with internal or external antenna connector
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EN 300 219
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Non-speech part of combined speech / non-speech radios with internal or external antenna connector
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EN 300 113
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Digital and combined analogue / digital radio equipment internal or external antenna connector
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EN 300 296
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Analog radio
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EN 300 341
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Non-speech part of speech / non-speech radios with integral antenna
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EN 300 390
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Digital and combined analogue / digital radio equipment with integral antenna
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Applicable standards in the USA:
| FCC Part 90 |
Land mobile services |
| FCC Part 95 |
Personal radio services |
Basically the same technology is used for UHF / VHF ship radio utilized on large vessels. Applicable standard are for instance EN 300 720 Ultra-High Frequency (UHF) on-board vesselscommunications systems and equipment |
