Allocations

 
U.S. Non-Federal-Government Allocations
76 - 77 GHz
RADIO ASTRONOMY
RADIOLOCATION
Amateur
Space research

FCC Rule Parts:
RF Devices (15)

U.S. Federal Government Allocations
76 - 77.5 GHz
RADIO ASTRONOMY
RADIOLOCATION
Space research (space-to-Earth)


ITU Region 1 Allocations
76 - 77.5 GHz
RADIO ASTRONOMY
RADIOLOCATION
Amateur
Amateur-satellite
Space research (space-to-Earth)


ITU Region 2 Allocations
76 - 77.5 GHz
RADIO ASTRONOMY
RADIOLOCATION
Amateur
Amateur-satellite
Space research (space-to-Earth)


ITU Region 3 Allocations
76 - 77.5 GHz
RADIO ASTRONOMY
RADIOLOCATION
Amateur
Amateur-satellite
Space research (space-to-Earth)


SpectrumWiki


Footnotes


5.149 In making assignments to stations of other services to which the bands:

13360-13410 kHz,22.81-22.86 GHz,
25550-25670 kHz,23.07-23.12 GHz,
37.5-38.25 MHz,31.2-31.3 GHz,
73-74.6 MHz31.5-31.8 GHz
  in Regions 1 and 3,  in Regions 1 and 3,
150.05-153 MHz36.43-36.5 GHz,
  in Region 1,42.5-43.5 GHz,
322-328.6 MHz,48.94-49.04 GHz,
406.1-410 MHz,76-86 GHz,
608-614 MHz in92-94 GHz,
  Regions 1 and 3,94.1-100 GHz,
1330-1400 MHz,102-109.5 GHz,
1610.6-1613.8 MHz,111.8-114.25 GHz,
1660-1670 MHz,128.33-128.59 GHz,
1718.8-1722.2 MHz,129.23-129.49 GHz,
2655-2690 MHz,130-134 GHz,
3260-3267 MHz,136-148.5 GHz,
3332-3339 MHz,151.5-158.5 GHz,
3345.8-3352.5 MHz,168.59-168.93 GHz,
4825-4835 MHz,171.11-171.45 GHz,
4950-4990 MHz,172.31-172.65 GHz,
4990-5000 MHz,173.52-173.85 GHz,
6650-6675.2 MHz,195.75-196.15 GHz,
10.6-10.68 GHz,209-226 GHz,
14.47-14.5 GHz,241-250 GHz,
22.01-22.21 GHz,252-275 GHz
22.21-22.5 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)

US342 In making assignments to stations of other services to which the bands:

13360-13410 kHz42.77-42.87 GHz*
25550-25670 kHz43.07-43.17 GHz*
37.5-38.25 MHz43.37-43.47 GHz*
322-328.6 MHz*48.94-49.04 GHz*
1330-1400 MHz*76-86 GHz
1610.6-1613.8 MHz*92-94 GHz
1660-1660.5 MHz*94.1-100 GHz
1668.4-1670 MHz*102-109.5 GHz
3260-3267 MHz*111.8-114.25 GHz
3332-3339 MHz*128.33-128.59 GHz*
3345.8-3352.5 MHz*129.23-129.49 GHz*
4825-4835 MHz*130-134 GHz
4950-4990 MHz136-148.5 GHz
6650-6675.2 MHz*151.5-158.5 GHz
14.47-14.5 GHz*168.59-168.93 GHz*
22.01-22.21 GHz*171.11-171.45 GHz*
22.21-22.5 GHz172.31-172.65 GHz*
22.81-22.86 GHz*173.52-173.85 GHz*
23.07-23.12 GHz*195.75-196.15 GHz*
31.2-31.3 GHz209-226 GHz
36.43-36.5 GHz*241-250 GHz
42.5-43.5 GHz252-275 GHz

are allocated (*indicates radio astronomy use for spectral line observations), all practicable steps shall be taken 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 ITU Radio Regulations at Nos. 4.5 and 4.6 and Article 29).


SpectrumWiki

 
E-band
70/80/90 GHz Bands
Unlicensed Level Probing Radars
Possible future primary allocation for automotive radars (WRC-15 Agenda Item 1.18)
WRC-27 consideration of satellite power limits to protect fixed and mobile services


Related Documents, Links, and Multimedia:
FCC Proceeding (3)
White Paper (1)
Other (1)

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 76 GHz 76.75 GHz 77.5 GHz
Wavelength 3.9 mm 3.9 mm 3.9 mm
Band designator(s) EHF (millimeter wave); W-band (IEEE) EHF (millimeter wave); W-band (IEEE) EHF (millimeter wave); W-band (IEEE)
Isotropic collecting area 1.2 mm2 1.2 mm2 1.2 mm2
Free space loss (1 m) 70.1 dB 70.2 dB 70.2 dB
Free space loss (1 km) 130.1 dB 130.2 dB 130.2 dB
Free space loss (10 km) 150.1 dB 150.2 dB 150.2 dB
Free space loss (100 km) 170.1 dB 170.2 dB 170.2 dB
Free space loss (1000 km) 190.1 dB 190.2 dB 190.2 dB
Free space loss
(35,786 km = GEO orbit)
221.1 dB 221.2 dB 221.3 dB
Free space loss (378,370 km = Moon) 241.6 dB 241.7 dB 241.8 dB