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RFS28 - Specification for Radio Apparatus: Radio Paging (ARCHIVED)
NOTE: This standard no longer applies. It has been superseded by the Radiocommunications (Radio Standards) Notice 2007
Issue 2
ISBN 0-478-00140-1
TECHNICAL PROVISIONS
1. Details of the frequencies available for radio paging systems and the general technical conditions for the operation of such systems are set out in the following paragraphs.
Frequency Tolerance
2. The transmitter must be crystal controlled and the carrier frequency must be maintained within a tolerance of ± 2.5 kHz.
Type of Emission, Bandwidth and Depth of Modulation
3. Amplitude or frequency modulation (including phase and FSK) is permitted in Bands A, B and C. Only frequency modulation is permitted for Band D. With normal modulation all emissions removed from the carrier frequency by more than 10 kHz must be attenuated to at least -23 dBm.
4. For AM operation the maximum emission bandwidth including sidebands must not exceed 20 kHz. The depth of modulation is not to exceed 100%.
5. For FM operation the maximum emission bandwidth shall be 16 kHz. The frequency deviation shall not exceed ± 5 kHz.
Transmitter Power
6. Transmitter power shall in all cases be the minimum required to provide an efficient service and in general must not exceed 5 watts (mean).
Frequency Usage
7. The following frequencies are available for use:
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Band A
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Band B
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Band C
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Band D
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(26.95-27.30 MHz)
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(31.30-31.60 MHz)
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(160.325-160.600 MHz)
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(458.540-458.610 MHz)
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Chan
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Freq (MHz)
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Chan
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Freq(MHz)
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Chan
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Freq (MHz)
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Chan
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Freq(MHz)
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RP1A
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26.978
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RP 1B
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31.325
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RP 1C
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160.3375
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RP1D
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458.550
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RP2A
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27.003
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RP 2B
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31.350
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RP 2C
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160.3625
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RP2D
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458.600
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RP3A
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27.028
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RP 3B
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31.375
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RP 3C
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160.3875
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RP4A
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27.053
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RP 4B
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31.400
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RP 4C
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160.4125
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RP5A
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27.078
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RP 5B
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31.425
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RP 5C
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160.4375
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RP6A
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27.103
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RP 6B
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31.450
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RP 6C
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160.4625
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RP7A
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27.137
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RP 7B
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31.475
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RP 7C
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160.4875
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RP8A
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27.162
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RP 8B
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31.500
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RP 8C
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160.5125
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RP9A
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27.187
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RP 9B
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31.525
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RP 9C
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160.5375
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RP10A
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27.212
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RP 10B
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31.550
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RP 10C
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160.5625
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RP11A
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27.237
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RP 11B
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31.575
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RP 11C
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160.5875
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RP12A
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27.262
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