ITU RR table: 200-241 GHz
Allocation Changes Timeline
Regulatory changes made to this frequency band at each World Radiocommunication Conference.
WRC-23
235 – 238 GHz
Service 'MOBILE' added as primary in all regions (global)
235 – 238 GHz
Service 'FIXED' added as primary in all regions (global)
235 – 238 GHz
WRC-23: Footnote 5.563AA created (Condition)
Footnote text
5.563AA In the frequency band 235-238 GHz, stations in the Earth exploration-satellite service (passive) shall not claim protection from stations in the fixed and mobile services. (WRC-23)
238.0 – 239.2 GHz
New allocation cell appears for all regions (global)
Services: FIXED (primary), FIXED-SATELLITE (SPACE-TO-EARTH) (primary), MOBILE (primary), RADIOLOCATION (primary), RADIONAVIGATION (primary), RADIONAVIGATION-SATELLITE (primary)
238 – 240 GHz
Allocation cell for all regions (global) no longer exists as a separate cell
Previously allocated to: FIXED (primary), FIXED-SATELLITE (SPACE-TO-EARTH) (primary), MOBILE (primary), RADIOLOCATION (primary), RADIONAVIGATION (primary), RADIONAVIGATION-SATELLITE (primary)
239.2 – 240.0 GHz
New allocation cell appears for all regions (global)
Services: EARTH EXPLORATION-SATELLITE (PASSIVE) (primary), FIXED-SATELLITE (SPACE-TO-EARTH) (primary), RADIOLOCATION (primary), RADIONAVIGATION (primary), RADIONAVIGATION-SATELLITE (primary)
240 – 241 GHz
Service 'EARTH EXPLORATION-SATELLITE (passive)' added as primary in all regions (global)
240 – 241 GHz
Service 'MOBILE' (was primary) removed in all regions (global)
240 – 241 GHz
Service 'FIXED' (was primary) removed in all regions (global)
WRC-19
217 – 226 GHz
WRC-19: Footnote 5.562B revised (Condition)
Footnote text
5.562B In the frequency bands 105-109.5 GHz, 111.8-114.25 GHz and 217-226 GHz, the use of this allocation is limited to space-based radio astronomy only. (WRC-19)
WRC-03
200 – 241 GHz
WRC-03: Footnote 5.340 revised (Condition)
Footnote text
5.340 All emissions are prohibited in the following bands: 1 400-1 427 MHz, 2 690-2 700 MHz, except those provided for by No. 5.422, 10.68-10.7 GHz, except those provided for by No. 5.483, 15.35-15.4 GHz, except those provided for by No. 5.511, 23.6-24 GHz, 31.3-31.5 GHz, 31.5-31.8 GHz, in Region 2, 48.94-49.04 GHz, from airborne stations 50.2-50.4 GHz2, 52.6-54.25 GHz, 86-92 GHz, 100-102 GHz, 109.5-111.8 GHz, 114.25-116 GHz, 148.5-151.5 GHz, 164-167 GHz, 182-185 GHz, 190-191.8 GHz, 200-209 GHz, 226-231.5 GHz, 250-252 GHz. (WRC-03)
WRC-2000
200 – 241 GHz
WRC-2000: Footnote 5.149 revised (Condition)
Footnote text
5.149 In making assignments to stations of other services to which the bands: 13 360-13 410 kHz, 25 550-25 670 kHz, 37.5-38.25 MHz, 73-74.6 MHz in Regions 1 and 3, 150.05-153 MHz in Region 1, 322-328.6 MHz, 406.1-410 MHz, 608-614 MHz in Regions 1 and 3, 1 330-1 400 MHz, 1 610.6-1 613.8 MHz, 1 660-1 670 MHz, 1 718.8-1 722.2 MHz, 2 655-2 690 MHz, 3 260-3 267 MHz, 3 332-3 339 MHz, 3 345.8-3 352.5 MHz, 4 825-4 835 MHz, 4 950-4 990 MHz, 4 990-5 000 MHz, 6 650-6 675.2 MHz, 10.6-10.68 GHz, 14.47-14.5 GHz, 22.01-22.21 GHz, 22.21-22.5 GHz, 22.81-22.86 GHz, 23.07-23.12 GHz, 31.2-31.3 GHz, 31.5-31.8 GHz in Regions 1 and 3, 36.43-36.5 GHz, 42.5-43.5 GHz, 48.94-49.04 GHz, 76-86 GHz, 92-94 GHz, 94.1-100 GHz, 102-109.5 GHz, 111.8-114.25 GHz, 128.33-128.59 GHz, 129.23-129.49 GHz, 130-134 GHz, 136-148.5 GHz, 151.5-158.5 GHz, 168.59-168.93 GHz, 171.11-171.45 GHz, 172.31-172.65 GHz, 173.52-173.85 GHz, 195.75-196.15 GHz, 209-226 GHz, 241-250 GHz, 252-275 GHz are allocated, administrations are urged to take all practicable steps to protect the radio astronomy service from harmful interference. Emissions from spaceborne or airborne stations can be particularly serious sources of interference to the radio astronomy service (see Nos. 4.5 and 4.6 and Article 29). (WRC-07)
200 – 241 GHz
WRC-2000: Footnote 5.340 revised (Condition)
Footnote text
5.340 All emissions are prohibited in the following bands: 1 400-1 427 MHz, 2 690-2 700 MHz, except those provided for by Nos. S5.421 and S5.422, 10.68-10.7 GHz, except those provided for by No. S5.483, 15.35-15.4 GHz, except those provided for by No. S5.511, 23.6-24 GHz, 31.3-31.5 GHz, 31.5-31.8 GHz, in Region 2, 48.94-49.04 GHz, from airborne stations, 50.2-50.4 GHz2, except those provided for by No. S5.555A, 52.6-54.25 GHz, 86-92 GHz, 100-102 GHz, 109.5-111.8 GHz, 114.25-116 GHz, 148.5-151.5 GHz, 164-167 GHz, 182-185 GHz, except those provided for by No. S5.563, 190-191.8 GHz, 200-209 GHz, 226-231.5 GHz, 250-252 GHz.
200 – 209 GHz
WRC-2000: Footnote 5.563A created (Condition)
Footnote text
5.563A In the bands 200-209 GHz, 235-238 GHz, 250-252 GHz and 265-275 GHz, ground-based passive atmospheric sensing is carried out to monitor atmospheric constituents. (WRC-2000)
217 – 226 GHz
WRC-2000: Footnote 5.562B created (Condition)
Footnote text
5.562B In the bands 105-109.5 GHz, 111.8-114.25 GHz, 155.5-158.5 GHz and 217-226 GHz, the use of this allocation is limited to space-based radio astronomy only. (WRC-2000)
237.9 – 238.0 GHz
WRC-2000: Footnote 5.563B created (Condition)
Footnote text
5.563B The band 237.9-238 GHz is also allocated to the Earth exploration-satellite service (active) and the space research service (active) for spaceborne cloud radars only. (WRC-2000)
WRC-97
200 – 241 GHz
WRC-97: Footnote 5.340 revised (Condition)
Footnote text
5.340 All emissions are prohibited in the following bands: 1 400-1 427 MHz, 2 690-2 700 MHz except those provided for by Nos. S5.421 and S5.422, 10.68-10.7 GHz except those provided for by No. S5.483, 15.35-15.4 GHz except those provided for by No. S5.511, 23.6-24 GHz, 31.3-31.5 GHz, 31.5-31.8 GHz in Region 2, 48.94-49.04 GHz from airborne stations, 50.2-50.4 GHz1 except those provided for by No. S5.555A, 52.6-54.25 GHz, 86-92 GHz, 105-116 GHz, 140.69-140.98 GHz from airborne stations and from space stations in the space-to-Earth direction, 182-185 GHz except those provided for by No. S5.563, 217-231 GHz.
200 – 241 GHz
WRC-97: Footnote 5.149 revised (Condition)
Footnote text
5.149 In making assignments to stations of other services to which the bands: 13 360-13 410 kHz, 4 950-4 990 MHz, 97.88-98.08 GHz*, 25 550-25 670 kHz, 4 990-5 000 MHz, 140.69-140.98 GHz*, 37.5-38.25 MHz, 6 650-6 675.2 MHz*, 144.68-144.98 GHz*, 73-74.6 MHz in 10.6-10.68 GHz, 145.45-145.75 GHz*, Regions 1 and 3, 14.47-14.5 GHz*, 146.82-147.12 GHz*, 150.05-153 MHz in 22.01-22.21 GHz*, 150-151 GHz*, Region 1, 22.21-22.5 GHz, 174.42-175.02 GHz*, 322-328.6 MHz*, 22.81-22.86 GHz*, 177-177.4 GHz*, 406.1-410 MHz, 23.07-23.12 GHz*, 178.2-178.6 GHz*, 608-614 MHz in Regions 1 and 3, 31.2-31.3 GHz, 181-181.46 GHz*, 1 330-1 400 MHz*, 31.5-31.8 GHz in 186.2-186.6 GHz*, Regions 1 and 3, 250-251 GHz*, 1 610.6-1 613.8 MHz*, 36.43-36.5 GHz*, 257.5-258 GHz*, 1 660-1 670 MHz, 42.5-43.5 GHz, 261-265 GHz,
200 – 241 GHz
WRC-97: Footnote 5.340 created (Condition)
Footnote text
5.340 All emissions are prohibited in the following bands: 1 400-1 427 MHz, 2 690-2 700 MHz except those provided for by Nos. S5.421 and S5.422, 10.68-10.7 GHz except those provided for by No. S5.483, 15.35-15.4 GHz except those provided for by No. S5.511, 23.6-24 GHz, 31.3-31.5 GHz, 31.5-31.8 GHz in Region 2, 48.94-49.04 GHz from airborne stations, 50.2-50.4 GHz1 except those provided for by No. S5.555A, 52.6-54.25 GHz, 86-92 GHz, 105-116 GHz, 140.69-140.98 GHz from airborne stations and from space stations in the space-to-Earth direction, 182-185 GHz except those provided for by No. S5.563, 217-231 GHz.
Source: ITU Radio Regulations, editions of 2008, 2012, 2016, 2020 and 2024. The English, French and Spanish texts are each taken from the official edition in that language, not translated from one another. Sources and citation.