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Band Plan 1951

Band Plans

In the world of radio, television, phone, digital, and satellite signals, all hell would break loose if there was not an internationally agreed set of plans to indicate who can use which part of the spectrum, how they can use that part of the spectrum and how much power they can use.

Currently the International Amateur Radio Union (IARU) oversees the world wide radio amateur allocation, which is reviewed frequently.

These are then adopted and adapted as needed on a national level, to take into account local requirements, such as diplomatic, emergency services and the military needs. In the UK these are maintained by the RSGB and are normally published annually in the February edition of RadCom and additionally reviewed mid-year.

Now to show how much plans have changed, the image below shows the adopted UK Band Plan from 1951, which was included in the first RSGB Yearbook.

Current UK Band Plan

Each year the RSGB, the IARU and OfCOM review the Radio Amateur Band Plan allocation. Most years they remain the same, but occasionally they are updated and it is essential that all Radio Amateurs only use the CURRENT permitted allocations and limitations. Failure to ensure that your are using the permitted allocations and limitations, could result in licence revocation.

To ensure that this section only points to the most current I have linked to the RSGBs Band Plan page, which contains the Band Plans in various formats, including tabbed HTML, PDF, Excel and Online versions

Link to CURRENT Band Plans

Notes to the Bandplans

Necessary bandwidth: For a given class of emission, the width of the frequency band which is just suffcient to ensure the transmission of information at the rate and with the quality required under specified conditions.

All Modes: CW, SSB and those modes listed as Centres of Activity, plus AM. Consideration should be given to adjacent channel users.

Image Modes: Any analogue or digital image modes within the appropriate band-width, for example SSTV and FAX.

Narrowband Modes: All modes using up to 500Hz bandwidth, including CW, RTTY, PSK, etc.

Digimodes: Any digital mode used within the appropriate bandwidth, for example RTTY, PSK, MT63, etc.

Sideband usage: Below 10MHz use lower sideband (LSB), above 10MHz use upper sideband (USB). Note the lowest dial set- tings for LSB Voice modes are 1843, 3603 and 7043kHz on 160, 80 and 40m. Note that on (5MHz) USB is used.

Amplitude Modulation (AM): AM with a bandwidth greater than 2.7kHz is acceptable in the All Modes segments provided users consider adjacent channel activity when selecting operating frequencies (Davos 2005).

Extended SSB (eSSB): Extended SSB (eSSB) is only acceptable in the All Modes segments provided users consider adjacent channel activity when selecting operating frequencies.

Digital Voice (DV): Users of Digital Voice (DV) should check that the channel is not in use by other modes (CT08_C5_Rec20).

FM Repeater Gateway Access: CTCSS Access is recommended. Toneburst access is being withdrawn in line with IARU-R1 recommendations.

MGM: Machine Generated Modes indicates those transmission modes relying fully on computer processing such as RTTY, AMTOR, PSK31, JTxx, FSK441 and the like. This does not include Digital Voice (DV) or Digital Data (DD).

WSPR: Above 30MHz, WSPR frequencies in the band plan are the centre of the transmitted frequency (not the suppressed carrier frequency or the VFO dial setting)

Frequency to Wavelength

Yer I get confused as I dont use all the bands...

FrequencyWave LengthNotes
136 kHzFull Licence holders only
472 kHz600 m
1.8 MHz160 m
3.5 MHz80 m
5 MHz60 mFull Licence holders only
7 MHz40 m
10 MHz30 m
14 MHz20 m
18 MHz 17 m
21 MHz 15 m
24 MHz12 m
28 MHz10 m
50 MHz6 m
70 MHz4 m
145 MHz2m
146-147 MHz2m extensionFull License holders only, with Notice of Variation (NoV)
430 MHz70 cm
1.3 GHz 23 cm
2300-2302 MHzFull License holders only, with Notice of Variation (NoV)
2.3 GHz13 cm
3.4 GHz9 cm
5.7 GHz6 cm
10 GHz3 cm
24 GHz12 mm
47 GHz6 mm
76 GHz4 mm
134 GHz2 mm
Wavelength Formula

Wavelength Calculation

To calculate the Wavelength in meters

Divide the Velocity (in m/s) by Frequency (in hertz)

Velocity is nominally taken as 300 m/s, which means V(m/s) will normally always be 300 

Frequency is in Hertz, so you need to convert

1 Hz = 1 Hz
1 KHz = 1000 Hz
1 MHz = 1000000 Hz
1 GHz = 1000000000 Hz


Last Updated 20 March 2022.