7.3M KA satellite communication antenna

Antenna diameter: 7.3m

Antenna type: Cassegrain/ring focus

Antenna mount type: AZ/EL adopt turntable structure

RMS: ≤0.3mm

Antenna weight（N.W）: 8000kg

Antenna travel range:

AZ: ±170° (continuous) EL: 5°～90°

Antenna drive mode: Dual motor control

Servo system AZ rotation speed EL rotation speed: 0.5-0.01°/S 0.5-0.01°/S

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Description

RF Specifications

Model	NS-SECK-730
Operating Frequency ,GHz	Ka band
	Receive	Transmit
	17.7~21.2	27.5~31
Gain,Mid-Band dBi	61.51	64.54
Polarization	circular
Axial Ratio（4 port, circular）	1.0	1.0
VSWR	1.25：1	1.25：1
Noise temperature EL : 10° 30° 50°	120k 80k 71k	/
G/T dB/K，10°El	36.70	/
-3dB beam width	0.14°	0.10°
Insertion loss, dB	0.7	0.7
Power capacity, KW		5
Interface	WR-42	WR-28
Rx-Tx isolation, dB	85
First sidelobe, dB Far sidelobes, dBi	-14 29 - 25 logθ（1°≤θ＜20°）	-14 29 - 25 logθ（1°≤θ＜20°）

Mechanical specifications

Antenna diameter	7.3m
Antenna type	Cassegrain/ring focus
Antenna mount type	AZ/EL adopt turntable structure
RMS	≤0.3mm
Antenna weight（N.W）	8000kg
Antenna travel range AZ EL	±170° (continuous) 5°～90°
Antenna drive mode	Dual motor control
Servo system AZ rotation speed EL rotation speed	0.5-0.01°/S 0.5-0.01°/S

Working wind speed	72 km/h
Without damage	216 km/h
Working temperature	-30℃～50℃
Humidity	100%
Solar radiation	1135Kcal/h/m²
Ice load	Work normally: 13mm ; without damage: 25mm
Seismic capacity	Horizontal: 0.3G; vertical: 0.1G
Surface treatment	Steel parts: thermal spraying zinc; aluminum part: primer paint+surface paint

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