Model AH-405 380-430 MHz 11 dBic Gain 
 

TETRA BAND ANTENNA

Design Features: The AH-405 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-405 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.

Constructions: The AH-405, 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-405 Helical Antenna is light weight, broadband and rugged helical antennas, supplied with 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.

Array Formation: For higher gain requirement, the Helical antenna can be supplied in DUAL stacked or QUAD stacked arrays with suitable power splitter/combiner cable harness.

Electrical Specifications:
Frequency Range380-430 MHz
Gain11 dBic
Bandwidth380-430MHz
Antenna TypeHelical
PolarizationCircular - RCCP or LHCP
Input Impedance50 Ohms
Radiation PatternDirectional
Horizontal Beamwidth -Half Power Points65+/-5 Degrees
Front to Back Ratio16 dB.
VSWR1.8:1
RF Power Handling Capacity500 Watts
Input TerminationN-Female

Mechanical Specifications:
MaterialsCopper, Fiberglass & Aluminum
Mounting Hardware -MaterialsMarine Grade Stainless Steel
Wind Rating200 Km/Hr.
Overall Length1300 mm
Shipping Length1400 mm
Radiating MaterialCopper
Maximum Mount Pipe Diameter 52mm (2 Inches)
Radome Outer Diameter260 mm
Gross Weight6 Kgs.

Environmental Specifications:
Operating Temperature(-) 30 to +70 Degrees Celsius
Storage Temperature(-) 40 to +80 Degrees Celsius
Humidity0 to 95% RH