Economista

Spacecraft Performance
and
Transponder
Frequency Layout

Comparison of the Communications Subsystems
Description

Intelsat VI

Intelsat VII

Intelsat VII-A

Intelsat VIII

Intelsat VIII-A

Ford Aerospace

Hughes

SS/Loral

SS/Loral

Lockheed Martin

Lockheed Martin

SS/Loral

SS/Loral

ASTRIUM

ASTRIUM

(now SS/Loral)

Prime Contractor

Intelsat V-AAircraft Company

51
1

601-605

701, 702, 704,

706, 707

801, 802, 804

805

902-905 & 907

901 & 906

10-01

10-02

Spacecraft
Designation

Intelsat IX

Intelsat X

705, 709

Year of First Launch

1985

1989

1993

1995

1997

1998

2001

2001

2003

2003

C-Band

26

38

26

26

38

28

44

42

36

45

Ku-Band

610

10

14

6

3

14

14

20

16

Number of
Transponders:

Maximum
Marketable Capacity
(in equivalent

C-Band: 42

C-Band: 64

C-Band: 42

C-Band: 42

C-Band: 64

C-Band: 36

C-Band: 76

C-Band: 72

56

70

36 MHz units)

Ku-Band: 12

Ku-Band: 24

Ku-Band: 20

Ku-Band: 28

Ku-Band: 12

Ku-Band: 6

Ku-Band: 22

Ku-Band: 22

23

36C-Band Beam

2 Hemi, 2 Zone,

2 Hemi, 4 Zone,

2 Hemi, 4 Zone,

2 Hemi, 4 Zone,

2 Hemi, 4 Zone,

Landmass Hemi A

2 Hemi, 4 or 5 Zone,

2 Hemi, 4 Zone,

4 Zone

3 Hemi, 2 Zone

Coverages

Global A and B,

Global A and B

Global A and B,

Global A, Global B,

Global A and B

and Hemi B

Global A and B

Global A and B

Global A and B

Global A and BC-Spot A and B

C-Spot A and B
Spot 1

Spot 1 and

Spot 1 and

F1A/1B

Spot 1*

Spot 2

Spot 2

F2A

C-Spot A and B
Ku-Band Beam

Operating
Frequency Band

West Spot and

West Spot and

Spot 1, Spot 2,

Spot 1/1X, Spot 2/2X,

Spot 1 and

East Spot

East Spot

Enhanced Spot 2/2A,

Enhanced Spot 2/2A,

Spot 2

and Spot 3

Coverages

and Spot 3

Uplink:5925 to 6425

Uplink: 5850 to 6425

Uplink: 5925 to 6425

Uplink: 5925 to 6425

Uplink: 5850 to 6425

Uplink: 5890 to 6650

Uplink: 5850 to 6425

Uplink: 5850 to 6425

Downlink: 3700

Downlink: 3625

Downlink: 3700

Downlink: 3700

Downlink: 3625

Downlink: 3400

Downlink: 3625

Downlink: 3625

to 4200

to 4200

to 4200

to 4200

to 4200

to 4200

to 4200to 4200

Uplink: 14.0 to 14.5

Uplink: 14.0 to 14.5

Uplink: 14.0 to 14.5

Uplink: 14.0 to 14.5

Uplink: 14.0 to 14.5

Uplink: 14.0 to 14.25

Uplink: 14.0 to 14.5

Uplink: 13.75

Downlink:

Downlink:

Downlink:

Downlink:

Downlink:

Downlink:

Downlink:

to 14.0

to 14.5

10.95 to 11.2 plus

10.95 to 11.2 plus

10.95 to 11.2 or

10.95 to 11.2 or10.95 to 11.2 or

12.5 to 12.75

10.95 to 11.2,

Downlink:

Downlink:

11.45 to 11.7

11.45 to 11.7

11.45 to 11.7

10.95 to 11.2 or

10.95 to 11.2

for C-Band (in MHz)
Operating
Frequency Band
for Ku-Band
(in GHz)

Spot 2*
Spot 3A/3B

Uplink: 13.75

11.7 to 11.95 or

11.7 to 11.95 or

11.7 to 11.95 or

12.5 to 12.75 plus

12.5 to 12.75 plus

12.5 to 12.75plus

11.7 to 11.95

11.45 to 11.7

11.45 to 11.7

11.45 to 11.7

11.45 to 11.7

11.45 to 11.7

12.5 to 12.75

11.95 to 12.2
Extent of Frequency
Reuse in Hemi/Zone

4-fold

6-fold; with a
4-fold option on a
Channel-by-Channel

NOTE: *Procured by Telenor

4-fold with enhanced 4-fold with enhanced
Zone connectivity

Zone connectivity

6-fold; with a 5-fold

2-fold in6-fold; except in

option for the POR

Hemi only

Channels (1-2) and
(3-4) which are 7-fold

6-fold

4 fold

5 fold

Intelsat Spacecraft – Special Capabilities
Intelsat V-A

Intelsat VI

Intelsat VII

Intelsat VII-A

Intelsat VIII

– SSTDMA broadcast
mode into multiple
downlink Beams
– Switchable
“Pseudo-Global”
coverage in
Channel (1’-2’)

– Channel 9 is...