Allocations

 
U.S. Non-Federal-Government Allocations
1675 - 1695 MHz
METEOROLOGICAL AIDS (radiosonde)
METEOROLOGICAL-SATELLITE (space-to-Earth) US88


U.S. Federal Government Allocations
1675 - 1695 MHz
METEOROLOGICAL AIDS (radiosonde)
METEOROLOGICAL-SATELLITE (space-to-Earth) US88


ITU Region 1 Allocations
1675 - 1690 MHz
METEOROLOGICAL AIDS
FIXED
METEOROLOGICAL-SATELLITE (space-to-Earth)
MOBILE except aeronautical mobile


ITU Region 2 Allocations
1675 - 1690 MHz
METEOROLOGICAL AIDS
FIXED
METEOROLOGICAL-SATELLITE (space-to-Earth)
MOBILE except aeronautical mobile


ITU Region 3 Allocations
1675 - 1690 MHz
METEOROLOGICAL AIDS
FIXED
METEOROLOGICAL-SATELLITE (space-to-Earth)
MOBILE except aeronautical mobile


SpectrumWiki


Footnotes


5.341 In the bands 1400-1727 MHz, 101-120 GHz and 197-220 GHz, passive research is being conducted by some countries in a programme for the search for intentional emissions of extraterrestrial origin.

US211 In the bands 1670-1690, 5000-5250 MHz and 10.7-11.7, 15.1365-15.35, 15.4-15.7, 22.5-22.55, 24-24.05, 31.0-31.3, 31.8-32.0, 40.5-42.5, 116-122.25, 123-130, 158.5-164, 167-168, 191.8-200, and 252-265 GHz, applicants for airborne or space station assignments are urged to take all practicable steps to protect radio astronomy observations in the adjacent bands from harmful interference; however, US74 applies.

US289 In the bands 460-470 MHz and 1690-1695 MHz, the following provisions shall apply:

(a) In the band 460-470 MHz, space stations in the Earth exploration-satellite service (EESS) may be authorized for space-to-Earth transmissions on a secondary basis with respect to the fixed and mobile services. When operating in the meteorological-satellite service, such stations shall be protected from harmful interference from other EESS applications. The power flux density produced at the Earth’s surface by any space station in this band shall not exceed -152 dBW/m²/4 kHz.

(b) In the band 1690-1695 MHz, EESS applications, other than the meteorological-satellite service, may also be used for space-to-Earth transmissions subject to not causing harmful interference to stations operating in accordance with the Table of Frequency Allocations.

US88 In the bands 1675-1695 MHz and 1695-1710 MHz, the following provisions shall apply:

(a) Non-Federal use of the band 1695-1710 MHz by the fixed and mobile except aeronautical mobile services is restricted to stations in the Advanced Wireless Service (AWS). Base stations that enable AWS mobile and portable stations to operate in the band 1695-1710 MHz must be successfully coordinated prior to operation as follows: (i) all base stations within the 27 protection zones listed in paragraph (b) that enable mobiles to operate at a maximum e.i.r.p. of 20 dBm, and (ii) nationwide for base stations that enable mobiles to operate with a maximum e.i.r.p. greater than 20 dBm, up to a maximum e.i.r.p. of 30 dBm, unless otherwise specified by Commission rule, order, or notice.

(b) Forty-seven Federal earth stations located within the protection zones listed below operate on a co-equal, primary basis with AWS operations. All other Federal earth stations operate on a secondary basis.

(1) Protection zones for Federal earth stations receiving in the band 1695-1710 MHz:

State

Location

Latitude

Longitude

Radius (km)

AK

Barrow ……………...

71° 19' 22"

156° 36' 41"

...…..….. 35

AK

Elmendorf AFB …….

61° 14' 08"

149° 55' 31"

….....….. 98

AK

Fairbanks …………...

64° 58' 22"

147° 30' 02"

…….….. 20

AZ

Yuma ……………….

32° 39' 24"

114° 36' 22"

…….….. 95

CA

Monterey …………...

36° 35' 34"

121° 51' 20"

…….….. 76

CA

Twenty-Nine Palms...

34° 17' 46"

116° 09' 44"

…….….. 80

FL

Miami ………………

25° 44' 05"

080° 09' 45"

…….….. 51

HI

Hickam AFB ……….

21° 19' 18"

157° 57' 30"

…….….. 28

MD

Suitland …………….

38° 51' 07"

076° 56' 12"

…….….. 98

MS

Stennis Space Center

30° 21' 23"

089° 36' 41"

…….….. 57

SD

Sioux Falls …………

43° 44' 09"

096° 37' 33"

…….….. 42

VA

Wallops Island ……..

37° 56' 45"

075° 27' 45"

…….….. 30

GU

Andersen AFB ……..

13° 34' 52"

144° 55' 28"

…….….. 42

(2)Protection zones for Federal earth stations receiving in the band 1675-1695 MHz:

State

Location

Latitude

Longitude

Radius (km)

CA

Sacramento …………

38° 35' 50"

121° 32' 34"

…….….. 55

CO

Boulder ……………..

39° 59' 26"

105° 15' 51"

…….….. 02

ID

Boise ……………….

43° 35' 42"

116° 13' 49"

…….….. 39

IL

Rock Island …….…...

41° 31' 04"

090° 33' 46"

…….….. 19

MO

Kansas City ………...

39° 16' 40"

094° 39' 44"

…….….. 40

MO

St. Louis ……………

38° 35' 26"

090° 12' 25"

…….….. 34

MS

Columbus Lake …….

33° 32' 04"

088° 30' 06"

…….….. 03

MS

Vicksburg ……....…..

32° 20' 47"

090° 50' 10"

…….….. 16

NE

Omaha …….…..…....

41° 20' 56"

095° 57' 34"

…….….. 30

OH

Cincinnati …...……...

39° 06' 10"

084° 30' 35"

…….….. 32

OK

Norman ……….…….

35° 10' 52"

097° 26' 21"

…….….. 03

TN

Knoxville …………...

35° 57' 58"

083° 55' 13"

…….….. 50

WV

Fairmont ……………

39° 26' 02"

080° 11' 33"

…….….. 04

PR

Guaynabo …………..

18° 25' 26"

066° 06' 50"

…….….. 48

NOTE: The coordinates are specified in the conventional manner (North latitude, West longitude), except that the Guam (GU) entry is specified in terms of East longitude.


SpectrumWiki

 
Radiosondes


Related Documents, Links, and Multimedia:
FCC Proceeding (2)
Occupancy Measurements (10)
Band Plan (1)
Legislation (1)

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 1675 MHz 1685 MHz 1695 MHz
Wavelength 17.9 cm 17.8 cm 17.7 cm
Band designator(s) UHF; L-band (IEEE) UHF; L-band (IEEE) UHF; L-band (IEEE)
Isotropic collecting area 25.5 cm2 25.2 cm2 24.9 cm2
Free space loss (1 m) 36.9 dB 37.0 dB 37.0 dB
Free space loss (1 km) 96.9 dB 97.0 dB 97.0 dB
Free space loss (10 km) 116.9 dB 117.0 dB 117.0 dB
Free space loss (100 km) 136.9 dB 137.0 dB 137.0 dB
Free space loss (1000 km) 156.9 dB 157.0 dB 157.0 dB
Free space loss
(35,786 km = GEO orbit)
188.0 dB 188.1 dB 188.1 dB
Free space loss (378,370 km = Moon) 208.5 dB 208.5 dB 208.6 dB