satellite communication earth station...

Satellite Communication Earth Station Antenna

General

Diameter: 4.5m, 5m, 6.2m, 7.3m, 9m, 11.3m, 12m,

13m, 15m, 16m, 18m

Antenna type: Shaped Ring-focus/Cassegrain

antenna

Mount type: El over Az (Full-motion, Jack screw

(EL)/Gear drive (AZ), Limited)

Operational frequency: L, S, C, Ku, Ka band etc.

Feature 16m C/Ku-band Cassegrain antenna

Follows FCC, INTELSAT, INMARSAT, ASIASAT, APTSAT, ITU and more

Standards.

High efficiency, low side lodes, low cross polarization discrimination

Shaped ring-focus optics (4.5m~9m) & Shaped Cassegrain optics

(11.3m~18m)

High strength aluminum panels and structural steel mount

Hot-dipped galvanized steel back structure and mount, a white finish for

all antenna surfaces

Automatically pointing and tracking

Options

Az travel range: 360°(continuous)

El travel range: 0~90°(continuous)

Ku-band CP/LP 4-port feed options

C-band CP/LP 4-port feed options

Ka-band high precision reflector

Ka-band CP/LP 4-port feed options

LP motorized adjustment

LP remote-control adjustment

CP/LP remote-control switchable feed

Cross-axis transmitting waveguide

Waveguide loads and cross-waveguide couplers

Platform and ladder

Waveguide inflator

De-icing Solutions

Lightning protection

Aircraft warning lights

Heat-protection material and air conditioning in Hub

Light and fan in Hub

6.2m Ku-Band ring-focus antenna 11.3m Ku-band antenna 7.3 m C-Band ring-focus antenna

13m C & Ku-band Cassegrain antenna

Main Technical Specifications

Items

4.5m 5.0m 6.2m 7.3m 9.0m

C-Band Ku-Band C-Band Ku-Band C-Band Ku-Band C-Band Ku-Band C-Band Ku-Band

Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx

Frequency (GHz) 5.85~

6.425

3.625~

4.2

14.0~

14.5

10.95~

12.75

5.85~

6.425

3.625~

4.2

14.0~

14.5

10.95~

12.75

5.85~

6.425

3.625~

4.2

14.0~

14.5

10.95~

12.75

5.85~

6.425

3.625~

4.2

14.0~

14.5

10.95~

12.75

5.85~

6.425

3.625~

4.2

14.0~

14.5

10.95~

12.75

Gain(dBi) 47.0 43.5 54.1 52.8 48.0 44.5 55.0 53.7 49.9 46.4 56.9 55.6 51.3 47.8 58.3 57.0 53.1 49.7 60.2 58.8

VSWR 2 Port 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1

4 Port 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1

Noise

temperature

(10°elevation)

2 Port 48k 58k 46k 57k 46k 57k 45k 57k 45k 57k

4 Port

50k

69k

52K

68k

52k

68k

50k

65k

50k

65k

Cross polarization

isolation(LP) 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB

Sidelobe performance First sidelobe level: ≤-14dB, Far sidelobe: meet ITU-RS-580

Mount type El-Az El-Az El-Az El-Az El-Az (limited

or full motion)

El-Az (limited

or full motion)

El-Az (limited

or full motion)

El-Az (limited

or full motion)

El-Az (limited

or full motion)

El-Az (limited

or full motion)

Az travel range

El travel range

±90°(2 segments@90°)

0~90°

±90°(2 segments@90°)

0~90°

±90°(2segments@90°) or0~180°

0~90°

±90°(2segments@90°) or0~180°

0~90°

±90°(2segments@90°) or0~180°

0~90°

Operational wind

Survival wind

72km/h

200km/ h

72km/h

200km/ h

72km/h

200km/ h

72km/h

200km/ h

72km/h

200km/ h

Temperature -40℃～60℃ -40℃～60℃ -40℃～60℃ -40℃～60℃ -40℃～60℃

Relative humidity 0~100% 0~100% 0~100% 0~100% 0~100%

Rain Up to 10cm/h Up to 10cm/h Up to 10cm/h Up to 10cm/h Up to 10cm/h

Solar radiation 360 BTU/h/ft² 360 BTU/h/ft² 360 BTU/h/ft² 360 BTU/h/ft² 360 BTU/h/ft²

Ice 3cm on all surfaces 3cm on all surfaces 3cm on all surfaces 3cm on all surfaces 3cm on all surfaces

Atmospheric

conditions

As encountered in coastal regions

and/or heavily industrialized areas









Main Technical Specifications

Items

11.3m 13m 15m 16m 18m

C-Band Ku-Band C-Band Ku-Band C-Band Ku-Band C-Band Ku-Band C-Band Ku-Band

Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx

Frequency(GHz) 5.85~

6.425

3.625~

4.2

14.0~

14.5

10.95~

12.75

5.85~

6.425

3.625~

4.2

14.0~

14.5

10.95~

12.75

5.85~

6.425

3.625~

4.2

14.0~

14.5

10.95~

12.75

5.85~

6.425

3.625~

4.2

14.0~

14.5

10.95~

12.75

5.85~

6.425

3.625~

4.2

14.0~

14.5

10.95~

12.75

Gain(dBi) 55.2 51.7 62.1 60.8 56.4 52.8 63.3 62.0 57.6 54.0 64.5 63.3 58.2 54.6 65.2 63.8 59.2 55.7 66.1 64.9

VSWR 2 Port 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1 1.25:1

4 Port 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1 1.3:1

Noise

temperature

(10°elevation)

2 Port 45k 57k 45k 57k 45k 57k 45k 57k 45k 57k

4 Port

50k

65k

50k

65k

50k

65k

50k

65k

50k

65k

Cross polarization

isolation(LP) 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB 35dB

Axial ratio(CP) 0.5 dB 0.5 dB 0.5 dB 0.5 dB 0.5 dB

Sidelobeperformance First sidelobe level:≤-14dB, Far sidelobe: meet ITU-RS-580

Mount type El-Az (limited or

full motion)

El-Az (limited or

full motion)

El-Az (limited or

full motion)

El-Az (limited or

full motion)

El-Az (limited or

full motion)

El-Az (limited or

full motion)

El-Az (limited or

full motion)

El-Az (limited or

full motion)

El-Az (limited or

full motion)

El-Az (limited or

full motion)

Az travel range

El travel range

±90°(2 segments@90°) or 0~180°

0~90°

±90°(2 segments@90°) or 0~180°

0~90°

±90°(2 segments@90°) or 0~180°

0~90°

±90°(2 segments@90°) or 0~180°

0~90°

±90°(2 segments@90°) or 0~180°

0~90°

Operational wind

Survival wind

72km/h

200km/ h

72km/h

200km/ h

72km/h

200km/ h

72km/h

200km/ h

72km/h

200km/ h

Temperature -40℃～60℃ -40℃～60℃ -40℃～60℃ -40℃～60℃ -40℃～60℃

Relative humidity 0~100% 0~100% 0~100% 0~100% 0~100%

Rain Up to 10cm/h Up to 10cm/h Up to 10cm/h Up to 10cm/h Up to 10cm/h

Solar radiation 360 BTU/h/ft² 360 BTU/h/ft² 360 BTU/h/ft² 360 BTU/h/ft² 360 BTU/h/ft²

Ice 3cm on all surfaces 3cm on all surfaces 3cm on all surfaces 3cm on all surfaces 3cm on all surfaces

Atmospheric

conditions











Meteorological Radar Antenna

Meteorological radar antennas are used for prediction of

disastrous weather. It operates in S/C band and adopts a

standard parabolic reflector with a turntable AZ-EL antenna

mount. Driver system provides both AC and DC mode for 24

hour uninterrupted and unattended operation. It has been tested

in the market for over 10 years, being mainly exported to Korea,

Romania, Germany, and India.

Technical Specification

Item S-Band C-Band

Radome

Frequency 2700～3000 MHz 5300～5725 MHz

Diameter 12 m 6.75 m

Survival Wind 70 m/s 70 m/s

Antenna

Reflector Diameter 8.54 m 4.5 m

First Side Lobe Level ≤-29 dB ≤-29 dB

Beam-width ≤0.99° ≤0.99°

Polarization Linear Horizontal and

vertical

Linear Horizontal and

vertical

Gain 45.0 dBi 45.0 dBi

Acceleration 19°/s2 19°/s2

Azimuth Rate (Max) 36°/s (6rpm) 36°/s (6rpm)

Elevation Rate (Max) 36°/s (6rpm) 36°/s (6rpm)

Servo

Unit

Angular Encoder Accuracy ≤±0.05° ≤±0.05°

Boresight Accuracy ≤0.2° ≤0.2°

Transmitter

Type Fully Coherent

Amplifier China

Fully Coherent

Amplifier China

Peak Power 900 kW 400 kW

Pulse width 1.57，4.71μs 0.8，2.5μs

Pulse Repetition Long：318 to 452 pulses/sec

Short：318 to 1304 pulses/sec

Long：318 to 452pulses/sec

Short：318 to 1304pulses/sec

Receiver

IF Frequency 57 MHz 57 MHz

Dynamic Range 93 dB 93 dB

NF ＜3.0 dB ＜3.0 dB

Clutter Canceller Map Controlled Map Controlled

Signal

Processor

Intensity Processing Angular & Rang

Integrator

Angular & Rang

Integrator

Velocity Processing PPP PPP

Bin Length 250 m 125 m

Clutter Suppression ＞50 dB ＞50 dB

System

Monitoring Online Calibration, status Monitor and Fault

Detection, Real Time Display

Products Products Over Meteorologically Significant Products

Display GUI based with many Unique Product Request，

Manipulation and Analysis Features

Comms LAN，WAN

Radar Range Reflectivity：460 km Reflectivity：400 km

Velocity：230 km Velocity：200 km

Remote Sensing Satellite Receiving Antenna

General

Diameter：

Fixed Station Antenna： 4.2m, 5.4m, 6.2m, 7.3m, 9m, 12m

Vehicular Antenna：5.4m, 6.2m, 7.3m

Antenna type: Shaped Ring-focus/ Cassegrain antenna

Operational frequency: L,S,X, L/S, L/X or S/X dual-band, L/S/Ku,

L/X/Ku, S/X/Ku tri-band

Feature

Remote sensing satellite high speed data receiving applications

El-Az-T mount or X-Y mount

Operates in L, S, X band or L/S,L/X, S/X dual-band or L/S/Ku,

L/X/Ku, S/X/Ku tri-band

Operation mode: Manual control, command control, program

tracking, mono-pulse tracking

Tracking mode: Manual, program and mono-pulse tracking

Monitoring and interface: Communicated with monitoring computer,

RS232/422/RS485 or network interface

Power supply: 220V AC±10%，380V AC±10%，50Hz±5%

12m S/X dual-band Antenna

with E-A-T Three Axis Mount

4.2 m and 5.4m L/X-band Antenna with X-Y Mount


Items Fixed Remote Sensing Satellite Receiving Antenna

Diameter 4.2m 5.4m 6.2m 7.3m 9m 12m

Antenna type Cassegrain Cassegrain Ring-focus Ring-focus Ring-focus Cassegrain

Mount

configuration X-Y X-Y EL-AZ-T EL-AZ-T EL-AZ-T EL-AZ-T

Operation

frequency

L,S,X band or

L/S,L/X,S/X dual-band

L,S,X band or

S,L/X,S/X dual-band

L,S,X band or


L,S,X band or


or L/S/Ku, L/X/Ku,

S/X/Ku tri-band

L,S,X band or


or L/S/Ku, L/X/Ku,

S/X/Ku tri-band

L, S, X band or


or L/S/Ku, L/X/Ku,

S/X/Ku tri-band

Efficiency 45％～55％ 45％～55％ 45％～55％ 45％～55％ 45％～60％ 45％～60％

Polarization Circular Circular Circular Circular Circular Circular

First sidelobe

level -14dB -14dB -14dB -14dB -14dB -14dB

VSWR ≤1.3：1 ≤1.3：1 ≤1.3：1~1.5：1 ≤1.3：1~1.5：1 ≤1.3：1~1.5：1 ≤1.3：1~1.5：1

Axial ratio(CP) 1.2：1（single band）

or

1.25：1（multi-band）

1.2：1（single band）

or

1.25：1（multi -band）


or



or



or



or


Travel range X:±90°

Y:±90°

X:±90°

Y:±90°

Az: ±355°

El :-1°～181°

T:±170°

Az: ±355°

El :-1°～181°

T:±170°

Az: ±355°

El :-1°～181°

T:±170°

Az: ±355°

El :-1°～181°

T:±170°

Slew rates

X:0.01°/S～3°/S

Y:0.01°/S～3°/S

X:0.01°/S～5°/S

Yv0.01°/S～5°/S

Az :0.01°/S～20°/S

El:0.01°/S～12°/S

T: 0.01°/S～5°/S

Az :0.01°/S～20°/S

El:0.01°/S～12°/S

T: 0.01°/S～5°/S

Az :0.01°/S～20°/S

El:0.01°/S～12°/S

T: 0.01°/S～5°/S

Az :0.01°/S～20°/S

El:0.01°/S～12°/S

T: 0.01°/S～5°/S

Slew

acceleration

X: 0.001°/S2～3°/S2，

Y: 0.001°/S2～3°/S2

X: 0.001°/S2～5°/S2，

Y: 0.001°/S2～5°/S2

Az:0.001°/S2～5°/S2

El:0.001°/S2～2°/S2

Az：0.001°/S2～5°/S2

El：0.001°/S2～2°/S2

Az：0.001°/S2～5°/S2

El：0.001°/S2～2°/S2

Az：0.001°/S2～5°/S2

El：0.001°/S2～2°/S2

Pointing

accuracy

1/8 with -3dB

beamwidth

1/8 with -3dB

beamwidth

1/8 with -3dB

beamwidth

1/8 with -3dB

beamwidth

1/8 with -3dB

beamwidth

1/8 with -3dB

beamwidth

Tracking

accuracy

1/10 with -3dB

beamwidth

1/10 with -3dB

beamwidth

1/10 with -3dB

beamwidth

1/10 with -3dB

beamwidth

1/10 with -3dB

beamwidth

1/10 with -3dB

beamwidth


Items Vehicular Remote Sensing Satellite Receiving Antenna

Diameter 5.4m 6.2m 7.3m

Antenna type Cassegrain Ring-focus dual shaped reflector Ring-focus dual shaped reflector

Mount

configuration EL-AZ-T EL-AZ-T EL-AZ-T

Operation

frequency L,S,Xband or L/S,L/X,S/X dual-band

L,S,X band, or L/S,L/X,S/X dual-band or

L/S/Ku, L/X/Ku, S/X/Ku tri-band

L,S,X band, or L/S,L/X,S/X dual-band or

L/S/Ku, L/X/Ku, S/X/Ku tri-band

Efficiency 50％～55％ 50％～55％ 50％～55％

Polarization Circular Circular Circular

First sidelobe

level -14dB -14dB -14dB

VSWR ≤1. 5：1 ≤1.5：1 ≤1.5：1

Axial ratio(CP) 1.22：1（single band）or 1.41：1（dual-band） 1.22：1（single band）or 1.41：1（dual-band） 1.22：1（single band）or 1.41：1（dual-band）

Travel range Az: ±355°, El :-1°～181°,T:：±7° AZ: ±355°，EL :-1°～181°，T:：±7° AZ: ±355°，EL :-1°～181°，T: ±7°

Slew rates Az :0.01°/s～20°/s,El:0.01°/s～12°/s,

T: ≥0.1°/s

AZ :0.01°/s～20°/s, EL:0.01°/s～12°/s

T: ≥0.1°/s

AZ :0.01°/s～20°/s,EL:0.01°/s～12°/s

T: ≥0.1°/s

Slew

acceleration

Az：0.001°/s2～5°/s2

El：0.001°/s2～2°/s2

AZ：0.001°/s2～5°/s2

EL：0.001°/s2～2°/s2

AZ：0.001°/S2～5°/S2

EL：0.001°/S2～2°/S2

Pointing

accuracy 1/6 of -3dB beamwidth 1/6 of -3dB beamwidth 1/6 of -3dB beamwidth

Tracking

accuracy 1/10 of -3dB beamwidth 1/10 of -3dB beamwidth 1/10 of -3dB beamwidth

Feature

TT&C Station Antennas

▪ Tracking objects over zenith

▪ High accuracy angle measurement

▪ High accuracy pointing and tracking

▪ Antenna calibration and error modification

18-Meter S-band TT&C Station

6.2-Meter Ka-Band 9-Meter Ka-Band

Antenna Technical Specifications

Items

6.2-Meter 9-Meter 18-Meter

Ka-Band Ka-Band S-Band

Tx Rx Tx Rx Tx Rx

Frequency Band (GHz) 29.0 to 31.0 19.2 to 21.2 29.0 to 31.0 19.2 to 21.2

―― 2.2 to 2.3

Gain (dBi) 62.5 59.5 65.7 62.5 －－ 50.1

VSWR 1.25:1 1.3:1 1.35:1 1.35:1 ―― 1.25:1

Noise Temperature (at 20°elevation)

－－ 120 K －－ 120 K －－ 36 K

Feed insertion loss 0.8dB 1.2dB 0.8dB 1.2dB 0.3dB

Isolation between Tx and Rx ports 95 dB 95 dB

Voltage Axial Ratio (CP) 1.06:1 1.06:1 1.06:1

Sidelobe Performance First sidelobe level: ≤-14dB, Sidelobe envelope: meet ITU-RS-580

Power Handling Capability 500W －－ 500W －－－－

Mount Type El-Az Full-motion El-Az Full-motion El-Az Full-motion

Travel Range Az: ±170°，El :0 to 90° Az: ±170°，El: 0 to 90° Az: ±355°，El: -1° to 81°

Slew Rates AZ:0.01°/s to1.5°/s EL: 0.01°/s to1.5°/s

AZ:0.01°/s to2°/s EL: 0.01°/s to2°/s

AZ:0.01°/s to3°/s EL: 0.01°/s to3°/s

Pointing Accuracy ≤1/8 of -3dB beam-width ≤1/8 of -3dB beam-width ≤1/8 of -3dB beam-width

Tracking Accuracy ≤1/10of -3dB beam-width ≤1/10of -3dB beam-width ≤1/10of -3dB beam-width

Angle Measurement Accuracy －－－－ ≤0.02°

Operational Wind Survival Wind

50 km/h gusting to 70 km/h 200km/ h



Temperature -40℃ to 60℃ -40℃ to 60℃ -40℃ to 60℃

Relative Humidity 0%~100% 0%~100% 0%~100%

Rain Up to 10cm/h Up to 10cm/h Up to 10cm/h

Solar Radiation 360 BTU/h/ft² 360 BTU/h/ft² 360 BTU/h/ft²

Ice 3 cm on all surfaces 3 cm on all surfaces 3 cm on all surfaces

Atmospheric Conditions As encountered in coastal regions and/or heavily industrialized areas

As encountered in coastal regions and/or heavily

industrialized areas

As encountered in coastal regions and/or heavily industrialized areas

Portable Station Antenna

Portable carbon-fiber antenna has three types, 0.7-Meter, 0.9-Meter and 1.2-Meter.

It has a unique design that combines high performance, reliability and ease of use. It

takes less than 5 minutes for the antenna to point to the satellite. The antenna is used

for emergency, news collection, geological survey, etc.

Transmit Frequency Band 14.00 to 14.50 GHz

Receive Frequency Band 12.25 to 12.75 GHz

Tx Gain

≥38.5+20Log(f/14.25) dBi (Size:0.7-Meter)



Rx Gain




VSWR ≤1.25

Polarization Linear

Isolation between Tx and Rx Ports ＞80 dB

Cross-polarization Isolation ≥35 dB （on axis）

First Sidelobe Level ≤-14 dB

Azimuth Steering Range ±30°

Elevation Steering Range 10 to 70

Polarization Adjustment Range 90

Weight

23 kg (Size:0.7-Meter),

25 kg (Size:0.9-Meter),

30 kg (Size:1.2-Meter)

Satellite Acquisition Time 5 minutes

Temperature -25C to 55C

0.7-Meter Ku-Band 1.2-Meter Ku-Band

In-motion Station Antenna

General

This series of in-motion-antenna include 0.6m, 0.8m, 1.0m and 1.2m

diameter antennas. The antenna control system adopts three levels of

stabilization, namely gyro feedback stabilization, mono-pulse automatic

tracking, and INS tracking. The mono-pulse automatic tracking implements

closed-loop tracking, with high velocity and precision. Meanwhile, the INS

tracking output data has been modified and overcomes the problem of INS

data drifting with time, which ensures the transmission quality while the

antenna moves.

Feature

High efficiency elliptical beam antenna to reduce the height of antenna.

Carbon fiber reflector design to reduce the weight and strain on the servo.

The mono-pulse automatic tracking is closed-loop tracking system, which

has high velocity and precision.

Re-capturing time after intermitting of the antenna is less than 1s, via INS

tracking

The system can display the operation situation, antenna angle, vehicle

geography position, vehicle state, and longitude of the target satellite etc.

Real time motor testing, self-alarm when overloaded.

The servo controller adopts modular and integrative design with less

connection cable (2) and 3U volume.

0.8m In-motion antenna 1.2m In-motion antenna

0.6m Ku-band shipborne antenna 1.2m Ku-band shipborne antenna

with mono-pulse track

0.6m Ku-band shipborne antenna 7.3m C-band shipborne antenna

with mono-pulse track

0.6m Ku-band airborne antenna 0.45m×0.68m Ku-band airborne antenna

Technical Specifications

Diameter 0.6m 0.8m 0.9m 1.2m

Operation frequency Uplink fT：14.00GHz-14.50GHz; Downlink* fR：12.25GHz-12.75GHz; Tracking fTR：12.25GHz-12.75GHz

Tx Gain (dBi) 36.5+20Log(f/14.25) 39.0+20Log(f/14.25) 40.0+20Log(f/14.25) 43.0+20Log(f/14.25)

Rx Gain (dBi) 35.5+20Log(f/12.5) 38.0+20Log(f/12.5) 38.4+20Log(f/12.5) 42.0+20Log(f/12.5)

Polarization isolation ≥30 dB (on axis);

First sidelobe level ≤-12.0dB

VSWR Tx：1.50（HPA Port）； Rx：1.25（LNA Port）

Polarization Linear Polarization

Port Isolation（TX-RX） ≥85dB

Mount type El over Az

Travel range Az:360°(continuous)；El：15°～90°

Polarization adjustment range ±90°

Velocity

Az:70°/s

El:60°/s

Pol:30°/s

Az:70°/s

El:60°/s

Pol:30°/s

Az:70°/s

El:60°/s

Pol:30°/s

Az:60°/s

El:60°/s

Pol:30°/s

Operation mode Automatic satellite acquisition

Tracking system Gyro stabilization, mono-pulse automatic tracking, and INS tracking

Tracking accuracy 1/8 with -3 dB beamwidth（R.M.S）

Power supply DC 24V ，350W DC 24V ，450W DC 24V ，600W DC24V ，600W

Weight 65 kg 90 kg 75 kg 130 kg

Height of Installed Vehicle ≤300mm ≤510mm ≤600mm ≤1000mm

Operation temperature -40℃ to +55℃ -40℃ to +55℃ -40℃ to +55℃ -40℃ to +55℃

satellite communication earth station...

Documents