picture of the encyclopedia
previous next
Focus
Version 0.81 comes with a new web design! Please allow popups for navigation.

TDRS 4



General


Designation 19883 / 89021B
Launch date 13 Mar 1989
Country of origin United States
Mission Telecommunications
Geostationary orbit 41°W, inclined
Launch vehicle STS 29

C-band marketed by CCC. On 15 May 1998 the C-band should not be used anymore to avoid interferences with Intelsat 806. In exchange Intelsat will use Intelsat 515 (to be renamed Columbia 515) at 37.5°W.

Location


Begin End Position
L: 13 Mar 1989 Nov 1996 41°W
Nov 1996 Mar 2005 41°W, inclined
Apr 2005   46°W, inclined


End of life


Out of service Dec 2011
Cause Decommissioned and later moved to the junk orbit


sat-index articles


Technical data


C-band EIRP coverage (dBW)
C-band G/T coverage (dB/K)

Specifications
S-band
C-band
Ku-band
C-band transponder frequency chart

Went inclined on 15 Oct 1996. Beacon: 2.211 GHz

© TBS Internet, all rights reserved. All reproduction, copy or mirroring prohibited. Legal notice
francais anglais contact