CPI Series 1374 3.7 M Wide C-Band Receive-Only Antenna

CPI Series 1374 3.7 m Wide C-Band Receive-Only Antenna

The CPI Series 1374 is a high-performance 3.7 m wide C-band receive-only antenna for demanding commercial satellite applications. Covering the extended 3.40–4.20 GHz receive band, it delivers 40.9 dBi midband gain and is available with linear or circular dual-port feeds. Its eight-segment SMC reflector and heavy-gauge galvanized steel Az/El mount provide high efficiency, corrosion resistance and 125 mph wind survival.

Antenna Diameter: 3.7 m (144 in.)
Receive Frequency Range: 3.40–4.20 GHz
Midband Gain: 40.9 dBi ±0.3 dB
Available Feed Configurations: Linear-polarized or circular-polarized wide C-band
Antenna Sidelobe Envelope: ITU-R S.580-6
Standards Compliance: FCC and ITU-R S.580 sidelobe requirements; Intelsat A, B and C and Eutelsat requirements
Feed Interface: Two CPR-229F ports
Reflector Material: Glass-fiber-reinforced polyester SMC
Reflector Construction: Eight-piece compression-molded reflector
Antenna Optics: Prime-focus axisymmetric
F/D Ratio: 0.375
Mount Type: Elevation-over-azimuth
Mount Construction: Heavy-gauge galvanized steel pedestal with jackscrews
Mast Pipe Interface: 6 in. Schedule pipe, 6.63 in. OD (168 mm)
Elevation Adjustment Range: 10°–70° continuous fine adjustment; 90° option available
Azimuth Adjustment Range: 360° continuous
Shipping Weight: 575 lb. (259 kg)

Linear-Polarized C-Band Specifications

Polarization: Linear, orthogonal
Midband Gain: 40.9 dBi ±0.3 dB
Antenna Beamwidth: 1.5°
Noise Temperature at 10° Elevation: 41 K
Noise Temperature at 20° Elevation: 39 K
Noise Temperature at 30° Elevation: 37 K
Cross-Polarization Isolation: Greater than 30 dB on-axis
Port-to-Port Isolation: 35 dB
VSWR: 1.43:1 max.
Feed Interface: Two CPR-229F ports

Circular-Polarized C-Band Specifications

Polarization: Circular, orthogonal
Midband Gain: 40.9 dBi ±0.3 dB
Antenna Beamwidth: 1.55°
Noise Temperature at 10° Elevation: 39 K
Noise Temperature at 20° Elevation: 37 K
Noise Temperature at 30° Elevation: 35 K
Cross-Polarization Isolation: Greater than 21.3 dB on-axis
Port-to-Port Isolation: 18 dB
VSWR: 1.4:1 max.
Feed Interface: Two CPR-229F ports

Environmental Specifications

Operational Wind Speed: 45 mph (72 km/h)
Survival Wind Speed: 125 mph (201 km/h) in any position
Operating Temperature: -40°F to +140°F (-40°C to +60°C)
Survival Temperature: -50°F to +160°F (-46°C to +71°C)
Operational Rain Rate: 0.5 in./h (13 mm/h)
Survival Rain Rate: 2 in./h (51 mm/h)
Ice Survival: 0.5 in. (13 mm) radial ice
Atmospheric Resistance: Designed for salt, pollutants and contaminants encountered in coastal and industrial environments
Solar Radiation: 360 BTU/h/ft² (1,135 W/m²)

Key Features:

• 3.7 m wide C-band receive-only antenna

• Extended 3.40–4.20 GHz receive frequency range

• 40.9 dBi midband gain

• Linear- or circular-polarized dual-port feeds

• Eight-piece compression-molded SMC reflector

• High-efficiency prime-focus axisymmetric optics

• ITU-R S.580-6 sidelobe performance

• Greater than 30 dB linear cross-polarization isolation

• 35 dB linear-feed port-to-port isolation

• Dual CPR-229F feed interfaces

• Heavy-gauge galvanized steel Az/El pedestal

• Continuous fine elevation adjustment

• 360° continuous azimuth adjustment

• Optional 90° elevation range

• Rugged, corrosion-resistant outdoor construction

• 125 mph survival wind rating

• Suitable for communications, data transfer and broadcast

• Excellent rejection of terrestrial noise and microwave interference