4M / 70 Mhz
In the UK the 70MHz (4 Metre) band is allocated with Secondary status. It is available on the basis of non-interference to other services inside or outside of the UK. For Full Licensees the power limit is restricted to 160W (22dBW) – lower than normal.
Frequencies of interest;
70.200 Mhz – SSB Calling
70.260 Mhz – AM/FM Calling
70.450 Mhz – FM Calling
70.000 Mhz to 70.090 Mhz @ 1 kHz
Propagation Beacons Only
70.090 Mhz to 70.100 Mhz @ 1 kHz
Personal Beacons
70.100 Mhz to 70.250 Mhz @ 2.7 kHz
Narrow Band Modes
70.185 Mhz – Crossband activity centre
70.200 Mhz – CW/SSB Calling
70.250 Mhz – MS calling
70.250 Mhz to 70.294 Mhz @ 12 kHz
All Modes
70.260 Mhz – AM/FM Calling
70.270 Mhz – MGM Centre of activity
70.294 Mhz to 70.500 Mhz @ 12 kHz
All modes channelised operations using 12.5 kHz spacing.
70.3000 Mhz
70.3125 Mhz – Digital Modes
70.3250 Mhz – DX Cluster
70.3375 Mhz – Digital Modes
70.3500 Mhz – Internet voice gateway
70.3625 Mhz – Internet voice gateway
70.3750 Mhz – May be used for Emergency Comms & Community Events
70.3875 Mhz – Internet voice gateway
70.4000 Mhz – May be used for Emergency Comms & Community Events
70.4125 Mhz – Internet voice gateway
70.4250 Mhz – FM Simplex – GB2RS News Broadcast
70.4375 Mhz – Digital Modes
70.4500 Mhz – FM Calling
70.4625 Mhz – Digital modes
70.4750 Mhz
70.4875 Mhz – Digital modes
RSGB Band Plan (effective from 1st January 2021) | ||||
The following band plan is largely based on that agreed at IARU Region 1 General Conferences with some local differences on | ||||
on frequencies above 430 MHz. | ||||
70 MHz (4m) | Necessary | UK Usage (Note 1) | ||
Bandwidth | ||||
70.000-70.090 MHz | 1 kHz | Propagation Beacons only | ||
70.090-70.100 | 1 kHz | Personal Beacons | ||
70.100-70.250 | 2.7 kHz | Narrow Band modes | ||
70.185 MHz Cross-band activity centre | ||||
70.200 MHz CW/SSB centre | ||||
70.250 MHz MS centre | ||||
70.250-70.294 | 12 kHz | All Modes | ||
70.260 MHz AM/FM calling | ||||
70.270 MHz MGM centre of activity | ||||
70.294-70.500 | 12 kHz | All modes channelised operations using 12.5 kHz spacing. | ||
70.3000 MHz | ||||
70.3125 MHz Digital modes | ||||
70.3250 MHz DX Cluster | ||||
70.3375 MHz Digital modes | ||||
70.3500 MHz Internet voice gateway (Note 2) | ||||
70.3625 MHz Internet voice gateway | ||||
70.3750 MHz See Note 2 | ||||
70.3875 MHz Internet voice gateway | ||||
70.4000 MHz See Note 2 | ||||
70.4125 MHz Internet voice gateway | ||||
70.4250 MHz FM simplex – used by GB2RS news broadcast | ||||
70.4375 MHz Digital modes (special projects) | ||||
70.4500 MHz FM calling | ||||
70.4625 MHz Digital modes | ||||
70.4750 MHz | ||||
70.4875 MHz Digital modes | ||||
Note 1: Usage by operators in other countries may be influenced by restrictions in their national allocations | ||||
Note 2: May be used for Emergency Communications and Community Events | ||||
LICENCE NOTES: Amateur Service 70.0-70.5 MHz Secondary User: 160W (22dBW) Maximum | ||||
Available on the basis of non-interference to other services (inside or outside the UK). | ||||
Notes to the Band Plan | ||||
Note-1: Access to 70.5 – 71.5 MHz by Full Licensees is also possible by NoV | ||||
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. |
You can find out more about the band on the website: http://www.70mhz.org/
The RSGB Contest Committee also runs events on the band, further information can be found on their website: https://www.rsgbcc.org/vhf/