RSGB 4m bandplan
This version is effective from 1st January 2006, based on that agreed at the 2005 IARU Region 1 Conference.
| Frequency (MHz) | max. BW | Usage |
| 70.000-70.050 | 500Hz | Beacons, including:
70.030 Personal beacons |
| 70.050-70.250 | 2.7kHz | Narrowband modes, including:
70.085 PSK31 centre of activity
70.150 MS calling
70.185 Cross-band activity centre
70.200 SSB/CW calling |
| 70.250-70.294 | 12kHz | All modes, including:
70.260 AM/FM calling |
| 70.294-70.500 | 12kHz | All modes. Channelised operations using 12.5 kHz spacing, including:
70.300 RTTY/fax calling/working
70.350 Can be used by RAYNET
70.375 Can be used by RAYNET
70.3875 Internet voice gateway
70.400 Can be used by RAYNET
70.4125 Internet voice gateway
70.425 FM simplex - used by GB2RS news broadcast
70.450 FM calling |
LICENCE NOTES:
Amateur Service 70.0-70.5MHz, Secondary User status.
160 Watts PEP (22dBW) permitted.
Available on the basis of non-interference to other services (inside or outside the UK).
Note: The use of Amplitude Modulation (AM) is acceptable in the Telephony and All modes segments but users are asked to consider adjacent channel activity when selecting operating frequencies.
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