1. Satellite Communications
DirecTV and Satellite Radio

2. Overview Direct Broadcast Satellite Satellite Radio DirecTV Background
Common Technology
Competitors XM
SIRIUS
WorldSpace

3. Direct Broadcast Satellite (DBS)
Refers to either
Television Service
Satellites which deliver service
Mini-dish systems
Parabolic Surface
Focuses incoming signals into Feed Horn
Reflects outgoing signals into narrow beam
Main part Consists of Low Noise Blockdown Converter (LNB)

4. Direct Broadcast Satellite (DBS)
Typical System
Operates in upper Ku Band (12 GHz to 14 GHz)
Legislation
C Band
Proprietary equipment needed
Encryption
Smart Card
Fixed Satellite Service (FSS)
Operates in C-Band (3.4 GHz to 7 GHz)

5. DirecTV Good TV, Better TV, DirecTV
Technology
Satellites
Three geostationary satellites
Two more to be launched
18 x 20 in elliptical dish
5 LNB’s
High Definition
Access Cards
D2/P12 – Current Issue
Law suits
ISO-7186 Smart Card Device
MPEG-II Compression
270 Mbps down to 10 Mbps

6. Satellite Fleet Satellite Orbital slot Launch date Satellite type
DirecTV-1
110.0° W
17 December 1993
Hughes Electronics HS-601
DirecTV-2
100.8° W
3 August 1994
DirecTV-1R
10 October 1999
Hughes Electronics HS-601HP
DirecTV-4S
101.2° W
27 November 2001
DirecTV-5
72.5° W
7 May 2002
Space Systems/Loral LS-1300
DirecTV-6
109.8° W
9 March 1997
DirecTV-7S
119.0° W
4 May 2004
DirecTV-8
101.0° W
22 May 2005
DirecTV-9S
101.1° W
13 October 2006
SPACEWAY-1
102.8° W
26 April 2005
Boeing BSS-702
SPACEWAY-2
99.2° W
16 November 2005
DirecTV-10, 11, 12
TBD
Est. 2007

7. Satellite Radio Background Digital Audio Radio Service (DARS)
Established in 1992
Operates in S-Band (2.3 GHz)
4 Second Delay
Main Competitors
North America
XM and Sirius
Europe, Middle East, Africa
WorldSpace
Terrestrial Repeaters (Cell Towers)

8. XM Radio Technology Satellites Two geostationary satellites
XM Rhythm at 115° west
XM Blues at 85° west
Replaced previous XM Rock and XM Roll
Third as a spare
Uses 12.5 MHz of S band: to  MHz
GM, Honda

9. XM Ground Repeaters

11. SIRIUS Radio Technology Satellites BMW, Daimler-Benz, VAG
Three Medium Earth Orbit
Extremely Elliptical Path
At least one satellite for 14 hours per day.
Positions
Radiosat 1, Radiosat 2, Radiosat 3
Fourth as a spare
BMW, Daimler-Benz, VAG

12. SIRIUS

13. WorldSpace Technology Satellites
Operates in L-Band (1.467 GHz to GHz)
Satellites
AfriStar, AsiaStar, AmeriStar

14. Summary Direct Broadcast Satellite Satellite Radio DirecTV
XM, SIRIUS, WorldSpace
Background
Technology
Satellites