563489578934

585
Microwave
relay
Communication
satellite
TAT-6 (SG) Bell 1976 4,200 3 0.5–30 A FDM>
SSB
TAT-8 (3 fibers) 1988 8,000 280 1.3 mm D TDM>
OOK
TAT-9 (3 fibers) 1991 16,000 565 1.55 mm D TDM>
OOK
TAT-10 (6 fibers) 1992 80,000 e 565 1.55 mm D TDM>
OOK
TAT-12 (6 fibers) Alcatel 1995 200,000 5,000 30 1.48 mm D TDM>
OOK
OALW160 Alcatel 2000 160,000 35 1.55 mm D DWDM
TAT-14 (4 fibers) 2001 640,000 1.55 mm D DWDM
TD-2 Bell 1948 600 (1954) plus 1.544 c 30 3700–4200 A FDM>
FM
TH-1 Bell 1961 2,400 (1979) plus 1.544 c 30 5925–6245 A FDM>
FM
TD-3 Bell 1967 1,800 (1979) plus 1.544 c 30 3700–4200 A FDM>
FM
TN-1 Bell 1974 1,800 plus 1.544 c 30 K band, 18 GHz A FDM>
FM
AR6A Bell 1980 6,000 30 5925–6425 A FDM>
SSB
18G274 NEC 1974 4,032 274.176 (DS-4) 7 18 GHz D 4 PSK
6G90 NEC 1979 1,344 90 (2DS-3) 30 6 GHz D 16 QAM
11G135 NEC 1980 2,016 135 (3 DS-3) 30 11 GHz D 16 QAM
6G135 NEC 1983 2,016 135 (3 DS-3) 30 6 GHz D 64 QAM
MDR-2306 Collins 1983 2,016 135 (3 DS-3) 30 6 GHz D 64 QAM
RD-6A Nortel 1984 2,016 135 (3 DS-3) 30 6 GHz D 64 QAM
TN-X> 40 Nortel 1996 4,032 310 (2 STS-3) 30 6 GHz D 512 QAM
Intelsat IV COMSAT 1971 8,000 22,300 6 GHz up> 4 GHz AD > FDM>
FM,
down
QPSK>
SCPC
Intelsat V COMSAT 1980 25,000 22,300 6> 4 and 14>
11 AD > FDM>
FM,
GHz
QPSK>
SCPC
Intelsat VI Intelsat 1990 120,000 22,300 6> 4 and 14>
11 AD > FDM>
FM,
GHz
QPSK>
SCPC
Intelsat VIII Intelsat 1998 121,000 22,300 6> 4 and 14>
11 AD > FDM>
FM,
GHz
QPSK>
SCPC
Intelsat X Intelsat 2004 170,000 6> 4 and 14>
11 AD > FDM>
FM,
GHz
QPSK>
SCPC
a A-analog; D-digital; DWDM-dense warelength division multiplexing.
b See Table 3–9 for more details on the T-carrier system.
c Since 1974 data under voice were added to give a 1.544-Mbs (DS-1) data channel in addition to the stated VF FDM capacity.
d 40 wavelength channels at 10 Gbs each.
e VF capacity with statistical multiplexing.