Galaxy 3R

USA

Also called: Anik E2R

Launch data:

Designation:	23741 / 95069A
Launch date	15 Dec 1995
Launch site	CC, LC-36A
Launch vehicle	Atlas-2A (AC-120 #97)
Mission	Telecommunications
Geostationary orbit	95°W
Mass at launch	3380 kg

Using a combination of digital compression and tightly focused spot beams, Galaxy 3R will used 24 Ku-band transponders to deliver as many as 144 channels of digital video and 60 channels of CD- quality audio via 24-inch (60 cm) dishes. The service was called Galaxy Latin America. In early 1998 the service was moved to Galaxy 8i.

A beam of the satellite was then moved to the US in order to extend the DirecTV programming.

C-band

Main transponders	24
Backup transponders	6
Power	16 W (SSPA)
Bandwidth	36 MHz
Coverage & EIRP max	CONUS: 40 dBW Alaska, Hawaii: 33 dBW
G/T max	+2 dB/K (conus)
SFD	-77 to -91 dBW/m²
Polarization	linear H/V
Frequencies	uplink: 5.925-6.425 GHz downlink: 3.700-4.200 GHz

Strap-crossing: transponders 18 and 24 can be feed by the Ku-band transponders 17 and 23 respectively.

Ku-band

Main transponders	24
Backup transponders	6
Power	63 W (TWTA)
Bandwidth	16 transponders of 27 MHz (horizontal) 8 transponders of 54 MHz (vertical)
Coverage	2 beams (12 transponders each): North America
EIRP max	47 dBW
G/T max	+3 dB/K (conus)
SFD	-77 to -94 dBW/m²
Polarization	linear H/V
Frequencies	Uplink: 14.0 - 14.500 GHz Downlink: 11.7-12.2 GHz

Downlink frequencies where switched from 11.450 - 11.750 GHz circular (with coverage to Latin America and Brazil on 2 beams) to 11.7-12.2 GHz linear (coverage to North America) sometime in Apr 1998 after Galaxy 8i went operational. It is unclear if the uplink frequencies also changed.

Strap-crossing: transponders 17 and 23 can be feed by the C-band transponders 18 and 24 respectively

Ku-band transponder frequency chart (GHz)

Horizontal Uplink	Horizontal Downlink	Transponder	Vertical Downlink	Vertical Uplink	Uplink beam	Downlink beam
	11.720	1		14.020	Conus	Conus
14.050		2	11.750		Conus + Offshore	Conus
	11.750	3		14.050	Conus	Conus
	11.780	4		14.080	Conus	Conus
14.110		5	11.810		Conus + Offshore	Conus or Conus + Offshore
	11.810	6		14.110	Conus	Conus
	11.840	7		14.140	Conus	Conus
14.170		8	11.870		Conus + Offshore	Conus or Conus + Offshore
	11.870	9		14.170	Conus	Conus
	11.900	10		14.200	Conus	Conus
14.230		11	11.930		Conus + Offshore	Conus or Conus + Offshore
	11.930	12		14.230	Conus	Conus
	11.960	13		14.260	Conus	Conus
14.290		14	11.990		Conus + Offshore	Conus or Conus + Offshore
	11.990	15		14.290	Conus	Conus
	12.020	16		14.320	Conus	Conus
14.350		17	12.050		Conus + Offshore or C-band	Conus or Conus + Offshore
	12.050	18		14.350	Conus	Conus
	12.080	19		14.380	Conus	Conus
14.410		20	12.110		Conus + Offshore	Conus or Conus + Offshore
	12.110	21		14.410	Conus	Conus
	12.140	22		14.440	Conus	Conus
14.470		23	12.170		Conus + Offshore or C-band	Conus or Conus + Offshore
	12.170	24		14.470	Conus	Conus

Ref: #7, #15 - update: 13.03.10