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AH-450
Model AH-450 430-475MHz 11 dBic Gain Download Datasheet Download Manual Post Enquiry

High Gain Helical Antenna

Design Features: The AH-475 uses extended stubs to provide the greater gain while maintaining the wider beam-width. This high-gain low-profile antennas use Circular Polarization Antenna Technology - which delivers better penetration through obstruction and interference. This commercial grade antenna provides superior performance as compare to significantly larger and more expensive products. Our AH series helical antennas are smaller than conventional yagi antenna. The AH-475 Helical Antenna is supplied with a specially designed mounting arrangement for steering the antenna in both planes, over 360 Degrees in Azimuth and 90 Degrees in Elevation for terrestrial and satellite links. Elevation tracking can be done if antenna is mounted on horizontal mast/pole. Broadband design feature of antenna makes it highly suitable for FTS application as FTS ground station antenna without having the requirement of multiple antennas.
Constructions: The AH-475, like all our AH series helical antennas, utilizes circular polarization to minimize the effects of multipath interference. Both Right Hand Circular Polarized (RHCP) and Left Hand Circular Polarized (LHCP) helical antenna models are available. The AH-475 Helical Antenna is light weight, broadband and rugged helical antennas, supplied with high strength fiberglass radome to protect the antenna from environment. Cylindrical enclosure is used for low wind loading and for minimal effect of ice formation on the helical antenna operation as well as providing an aesthetically pleasing appearance. The antenna is designed as per MIL-STD-810G standards.
Array Formation: For higher gain requirement, the Helical antenna can be supplied in DUAL stacked or QUAD stacked arrays formation with suitable power splitter/combiner cable harness. Customized color and customized mounting can also be supplied on request.

Electrical Specifications:
Frequency Range 400-550 MHz
Gain 11 dBic
Bandwidth 400-550MHz
Antenna Type Helix
Polarization Circular RHCP or LHCP
Input Impedance 50 Ohms
Radiation Pattern Directional
Horizontal Beamwidth -Half Power Points 55+/-5 Degrees Typical
Front to Back Ratio 15+/-1 Degrees Typical
VSWR - Equal To or Better Then 2.5:1
RF Power Handling Capacity 1500 Watts
Input Termination N-Female or DIN Female

Mechanical Specifications:
Antenna Materials Fiber Glass, Copper & SS
Mounting Hardware -Materials Marine Grade Stainless Steel
Wind Rating 200 KMPH
Overall Length 1300 mm
Shipping Length 1450 mm
Radiating Material High Quality Copper
Mounting Clamps Position At Rear End of Antenna
Maximum Mount Pipe Diameter 52 mm
Radome Material High Strength Fiber Glass
Reflector Diameter 310 x 310 mm
Gross Weight 14 Kgs

Environmental Specifications:
Operating Temperature (-) 30 to +70 Degrees Celsius
Storage Temperature (-) 40 to +80 Degrees Celsius
Humidity 0 to 95% RH

High Gain Helical Antenna

Model Frequency Gain Download PDF ENQ
AH-450 430-475MHz 11 dBic Gain
 
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MANDATORY INFORMATION
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Design Features: The AH-475 uses extended stubs to provide the greater gain while maintaining the wider beam-width. This high-gain low-profile antennas use Circular Polarization Antenna Technology - which delivers better penetration through obstruction and interference. This commercial grade antenna provides superior performance as compare to significantly larger and more expensive products. Our AH series helical antennas are smaller than conventional yagi antenna. The AH-475 Helical Antenna is supplied with a specially designed mounting arrangement for steering the antenna in both planes, over 360 Degrees in Azimuth and 90 Degrees in Elevation for terrestrial and satellite links. Elevation tracking can be done if antenna is mounted on horizontal mast/pole. Broadband design feature of antenna makes it highly suitable for FTS application as FTS ground station antenna without having the requirement of multiple antennas.
Constructions: The AH-475, like all our AH series helical antennas, utilizes circular polarization to minimize the effects of multipath interference. Both Right Hand Circular Polarized (RHCP) and Left Hand Circular Polarized (LHCP) helical antenna models are available. The AH-475 Helical Antenna is light weight, broadband and rugged helical antennas, supplied with high strength fiberglass radome to protect the antenna from environment. Cylindrical enclosure is used for low wind loading and for minimal effect of ice formation on the helical antenna operation as well as providing an aesthetically pleasing appearance. The antenna is designed as per MIL-STD-810G standards.
Array Formation: For higher gain requirement, the Helical antenna can be supplied in DUAL stacked or QUAD stacked arrays formation with suitable power splitter/combiner cable harness. Customized color and customized mounting can also be supplied on request.

Electrical Specifications:
Frequency Range 400-550 MHz
Gain 11 dBic
Bandwidth 400-550MHz
Antenna Type Helix
Polarization Circular RHCP or LHCP
Input Impedance 50 Ohms
Radiation Pattern Directional
Horizontal Beamwidth -Half Power Points 55+/-5 Degrees Typical
Front to Back Ratio 15+/-1 Degrees Typical
VSWR - Equal To or Better Then 2.5:1
RF Power Handling Capacity 1500 Watts
Input Termination N-Female or DIN Female

Mechanical Specifications:
Antenna Materials Fiber Glass, Copper & SS
Mounting Hardware -Materials Marine Grade Stainless Steel
Wind Rating 200 KMPH
Overall Length 1300 mm
Shipping Length 1450 mm
Radiating Material High Quality Copper
Mounting Clamps Position At Rear End of Antenna
Maximum Mount Pipe Diameter 52 mm
Radome Material High Strength Fiber Glass
Reflector Diameter 310 x 310 mm
Gross Weight 14 Kgs

Environmental Specifications:
Operating Temperature (-) 30 to +70 Degrees Celsius
Storage Temperature (-) 40 to +80 Degrees Celsius
Humidity 0 to 95% RH