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Spectrum

Spectrum

LEGEND: (Commercial SATCOM)

CAPITALIZED NAMES = Fixed Satellite Service (FSS)

lower case names = Mobile Satellite Service (MSS)/ Personal Comm Services (PCS)

MILSTAR

DSCS

GBS

ACTS

Space-Ground Link System (SGLS)

DSCS

inmarsat, iridium, globalstar,

ellipso

ico, ellipso,

globalstar

INTELSAT

INTELSAT,

GE

TELEDESIC, SPACEWAY, ASTROLINK, SKYBRIDGE,

iridium (inter-satellite &

gateway links)

TELEDESIC, SPACEWAY, ASTROLINK,

CYBERSTAR, SKYBRIDGE,

iridium (inter-satellite & gateway links)

Com値.

L

Com値.

S

Com値.

C

Com値.

Ku

Com値.

Ka

1.53-

1.55

1.61-

1.65

1.98-

2.1

2.4-

2.5

3.9

6.3

12

14

1.761-1.842 GHz downlinks

2.200-2.290 GHz uplinks

7.25-7.75 GHz

7.9-8.4 GHz

19.2-20.2 GHz

29-30 GHz

20.2- 21.2 GHz

Milstar

& GBS

30-31 GHz

43-45 GHz

27.5

30

L1:

1.57542

GHz

L2:

1.22760

GHz

Global

Positioning

System (GPS)

ACTS

途egular cellular

(Land Mobile Radio)

800

900

Com値.

UHF

UHF SATCOM users are

subject to interference

from terrestrial UHF users, who have higher international regulatory priority.

SGLS frequencies are at risk from international & US commercial encroachment.

Heavy orbital/terrestrial

congestion requires much coordination with terrestrial microwave link users.

Advanced

Communications

Technology Satellite

(ACTS)

= 羨t-Risk bands currently sought

for commercial satellite use, with

potential for U.S. or international

spectrum reallocation

137-

138

148-

150

Com値.

VHF

Military

Air/Ground

Radios

138-144 MHz

orbcomm

EHF

3

GHz

30

GHz

UHF

SHF

300

MHz

1GHz

110

GHz

L

S

X

W

C

V

135-170 MHz

400-600 MHz

1.5-2.0 GHz

12-18 GHz

27-30 GHz

40-45 GHz

Ka

Ku

K

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