USA-43/44

 1989-069A

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The final TRW DSCS II, E-15, was launched seven years after the previous one, again together with a DSCS III satellite. It was given the designation USA 43.

DSCS II E-15
Date	Time	Event	Orbit
1989 Sep 4	0554	Launch by Titan 34D/Transtage	CC LC40
			97.55 153 x 1129 x 28.6
		Transtage burn 1	GTO
		Transtage burn 2	GEO
1995 Jul		IO Reserve	GEO 57.0E

1989-069B

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The second prototype satellite, A-2, was launched on 1989 Sep 4 by Titan 34D/Transtage. The final DSCS II satellite, F-15, was also mounted on the Transtage. This was the final DSCS launch on a Titan. DSCS III A-2 was designated USA 44 after launch.

DSCS III A-2
Date	Time	Event	Orbit
1989 Sep 4	0554:01	Launch by Titan 34D/Transtage	CC LC40
		T+1:50 Stage 1 ignition
		T+2:02 SRM sep
		T+4:35 St 1 sep
	0558	T+4:45 Fairing sep
	0602:06	T+8:05 Stage 2 sep
			97.55 153 x 1129 x 28.6
	0618?	Transtage burn 1
		GTO
	1200?	Transtage burn 2, GEO
	1215?	Sep from DSCS II F-15 and Transtage
1995 Jul		IO Prime	GEO 60.0E
1997 Oct		IO Reserve	GEO 57E
2005 Jun		Orbit raise
2005 Jun 10		end of ops

Payload:

• SHF 7.9-8.4/7.2-7.7 GHz X-band transponders (6)

• High gain spot dish antenna

• Waveguide multibeam antenna (2)