Band Plan – VHF & UHF

General notes to the Band Plan

ITU-R Recommendation SM.328 (extract)
Necessary bandwidth: For a given class of emission, the width of the frequency band which is just sufficient to ensure the transmission of information at the rate and with the quality required under specified conditions.

The use of Amplitude Modulation (AM) is acceptable in the all modes segments but users are asked to consider adjacent channel activity when selecting operating frequencies.

Foundation and Intermediate Licence holders are advised to check their licences for the permitted power limits and conditions applicable to their class of licence.

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6m (50 MHz)

Notes

1. Only to be used between stations in different continents (not for intra-European QSOs)
2. 50.0-50.1MHz is currently shared with Propagation Beacons. These are due to be migrated by Aug-2014 to 50.4-50.5 MHz, to create more space for CW and a new Synchronised Beacon Project
3. 20 kHz channel spacing. Channel centre frequencies start at 51.430 MHz
4. Embedded data traffic is allowed with digital voice (DV)
5. May be used for Emergency Communications and Community Events
6. 51.0-52.0 MHz Available on the basis on non-interference to other services (inside or outside the UK)

4m (70 MHz)

Notes

1. Usage by operators in other countries may be influenced by restrictions in their national allocations
2. May be used for Emergency Communications and Community Events
3. 160W Maximum Power – Available on the basis of non-interference to other services (inside or outside the UK)

2m (144 MHz)

Notes

1. Meteor scatter operation can take place up to 26kHz higher than the reference frequency
2. 12.5kHz channels numbered RV48-RV63. RV48 input = 145.000 MHz, output=145.600 MHz
3. 12.5kHz simplex channels numbered V16-V46. V16=145.200 MHz
4. Emergency Communications Groups utilising this frequency should take steps to avoid interference to ISS operations in non-emergency situations
5. Embedded data traffic is allowed with digital voice (DV)
6. Simplex use only – no DV gateways
7. EME activity using MGM is commonly practiced between 144.110-144.160 MHz
8. Amplitude Modulation (AM) is acceptable within the All Modes segment. AM usage is typically found on 144.550MHz. Users should consider adjacent channel activity when selecting operating frequencies
9. In other countries IARU Region-1 recommend 145.375 MHz
10. May be used for Emergency Communications and Community Events
11. May be used for repeaters in other IARU Region-1 countries
12. DV users are asked not to use this channel, and use 144.6125 MHz for calling
13. 144.800 use should be NBFM to avoid interference to 144.8125 DV Gateways

70cm (430 MHz)

Notes

1. In Switzerland, Germany and Austria, repeater inputs are 431.050-431.825 MHz with 25 kHz spacing and outputs 438.650-439.425 MHz.
   In Belgium, France and the Netherlands repeater outputs are 430.025-430.375 MHz with 12.5 kHz spacing and inputs at 431.625-431.975 MHz.
   In other European countries repeater inputs are 433.000-433.375 MHz with 25 kHz spacing and outputs at 434.600-434.975 MHz, i.e. the reverse of the UK allocation.
2. ATV carrier frequencies shall be chosen to avoid interference to other users, in particular the satellite service and repeater inputs.
3. In other countries IARU Region-1 recommend 433.450 MHz for DV calling
4. Users must accept interference from repeater output channels in France and the Netherlands at 430.025-430.575 MHz. Users with sites that allow propagation to other countries (notably France and the Netherlands) must survey the proposed frequency before use to ensure that they will not cause interference to users in those countries
5. All Internet voice gateways: 12.5kHz channels, maximum deviation +-2.4kHz, maximum erp 5W (7 dBW), attended-only operation in the presence of the NoV holder.
6. May be used for Emergency Communications and Community Events
7. IARU Region 1 recommended maximum bandwidths are 12.5 or 20 kHz
8. Embedded data traffic is allowed with digital voice (DV)
9. Simplex use only – no DV gateways
10. QPSK 2 Mega-symbols/second maximum recommended
11. Exclusion: 431-432 MHz not available within 100km radius of Charing Cross, London
12. Power Restriction: 430-432 MHz is 40W erp maximum
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