CPI Series 1385 3.8 M Ku-Band Linear Tx/Rx VSAT Antenna

CPI Series 1385 3.8 m Ku-Band Linear Tx/Rx VSAT Antenna

The CPI Series 1385 3.8 Meter Ku-Band Linear Tx/Rx VSAT Antenna delivers high gain and precise beam performance for commercial, enterprise, government, and broadcast satellite networks.

Covering 10.95–12.75 GHz receive and 13.75–14.50 GHz transmit frequencies, this antenna supports a broad range of Ku-band satellite services. Its segmented SMC reflector combines field-friendly assembly with dimensional stability and long-term environmental durability.

The offset-fed design provides excellent aperture efficiency, low sidelobes, and strong cross-polarization isolation for reliable two-way Ku-band communications.
Antenna diameter: 3.8 m
Application: Ku-band satellite transmit and receive
Polarization: Linear
Receive frequency: 10.95–12.75 GHz
Transmit frequency: 13.75–14.50 GHz
Receive midband gain: 51.20 dBi, ±0.5 dB
Transmit midband gain: 53.00 dBi, ±0.5 dB
Receive VSWR: 1.5:1 maximum
Transmit VSWR: 1.3:1 maximum
Receive return loss: Better than 14.00 dB
Transmit return loss: Better than 17.70 dB
Receive 3 dB beamwidth: 0.50°
Transmit 3 dB beamwidth: 0.40°
Receive 15 dB beamwidth: 1.00°
Transmit 15 dB beamwidth: 0.90°
On-axis cross-polarization isolation: Receive greater than 30 dB; transmit greater than 35 dB
Cross-polarization isolation within 1 dB beamwidth: Receive greater than 25 dB; transmit greater than 26 dB
Power handling: Listed as 100 kW in the datasheet; confirmation recommended
Receive waveguide interface: WR75
Transmit waveguide interface: WR75
Noise temperature at 5° elevation: 70 K
Noise temperature at 10° elevation: 60 K
Noise temperature at 20° elevation: 55 K
Noise temperature at 40° elevation: 45 K
Reflector material: Glass-fiber-reinforced polyester SMC
Antenna optics: Four-piece offset-fed prime-focus design
F/D ratio: 0.6
Mast requirement: 10-inch Schedule 40 pipe, 10.75-inch OD
Elevation adjustment: 12°–90° or 0°–15° for polar latitudes
Azimuth adjustment: Continuous 360° with ±35° fine adjustment
Approximate net weight: 1,125 lb / 511 kg
Approximate packaged weight: 1,882 lb / 855 kg
Operational wind speed: 50 mph / 80 km/h
Survival wind speed: 125 mph / 201 km/h
Operating temperature: -40°F to +140°F / -40°C to +60°C
Rain performance: 0.5 inch / 13 mm per hour
Relative humidity: 0–100%, condensing

Key Features

• Wide Ku-band transmit and receive frequency coverage

• 51.20 dBi receive and 53.00 dBi transmit gain

• Greater than 35 dB transmit cross-polarization isolation

• Narrow beamwidth for precise satellite acquisition

• WR75 receive and transmit interfaces

• Four-piece SMC reflector for simplified deployment

• Offset-fed optics with reduced aperture blockage

• Continuous 360° azimuth movement

• 125 mph survival wind rating