1.8M C-band Circular Polarized Rx/Tx Class III Antenna System

High Gain, Wide Frequency Range: Boasting a 1.8m effective aperture, this antenna offers excellent gain over a broad frequency spectrum.
Rugged Durability: Built with reinforced polyester, it withstands harsh conditions, including winds up to 200 km/h (125 mph).
Flexible Polarization and Precision: Circular polarization and precise adjustments provide versatility for optimal performance.

Specification	Value
Antenna Model	62 – 1833411L/R Type N
	62 – 1833911L/R (WR137)
Intelsat Standard	Standard G & H-2 (IESS 601)
Approval Code	IA050A00
RF Performance
Effective Aperture	1.8 m (71 in)
Operating Frequency	Tx: 5.850 – 6.425 GHz
	Rx: 3.625 – 4.200 GHz
Polarization	Circular; Tx LH, Rx RH or Tx RH, Rx LH
Gain (±0.4 dBi)	Tx: 39.5 dBi @ 6.1 GHz
	Rx: 35.4 dBi @ 3.9 GHz
3 dB Beamwidth	Tx: 2.0° @ 6.1 GHz
	Rx: 3.0° @ 3.9 GHz
Sidelobe Envelope (Tx, Co-Pol dBi)	2.8° < q < 20°: 29 – 25 Log q
	20° < q < 26.3°: -3.5
	26.3° < q < 48°: 32 – 25 Log q
	48° < q < 180°: -10
Axial Ratio	Tx: 1.3 VAR (2.3 dB)
	Rx: 1.4 VAR (3.0 dB)
Antenna Noise Temperature	10° El: 41° K
	20° El: 36° K
	30° El: 33° K
VSWR	Tx: 1.3:1
	Rx: 1.5:1
Isolation (Port to Port)	Tx: 60 dB
	Rx: 60 dB
Feed Interface	Tx: Type N or CPR-137
	Rx: CPR-229

Reflector Material	Glass Fiber Reinforced Polyester
Antenna Optics	One-Piece Offset Feed Prime Focus
Mount Type	Elevation over Azimuth
Elevation Adjustment Range	10˚ – 90˚ Continuous, Fine Adjustment
Azimuth Adjustment Range	360˚ Continuous ±10˚ Fine Adjustment
Feed Support	Rectangular Section with Alignment Legs
Mast Pipe Interface	168 mm (6.63 in) Diameter
Environmental Performance
Wind Loading	Operational: 80 km/h (50 mph)
	Survival: 200 km/h (125 mph)
Temperature	-50˚C to 80˚C
Humidity	0 to 100% (Condensing)
Atmosphere	Standard Hardware Meets 500 Hour Salt Spray Test
	Requirements (ASTM B-117)
Solar Radiation	360 BTU/h/ft2
Shock and Vibration	As Encountered During Shipping and Handling