Model AH-850 700 - 990 MHz 12 dBic. Gain 
 

HELICAL ANTENNA

Design Features: The AH-850 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-850 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-850, 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-850 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.

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 Range700 - 990 MHz
Gain12 dBic.
Bandwidth200 MHz.
PolarizationCircular - LHCP or RHCP
Input Impedance50 Ohms
Radiation PatternDirectional
Beamwidth -3dB.50 Degrees (Vertical)
Front to Back Ratio17 dB.
VSWR1.5:1
RF Power Handling Capacity250 Watts
Input TerminationN-Female

Mechanical Specifications:
Materials6063T6 Aluminium, Copper, ABS
Mounting Hardware -MaterialsStainless Steel
Wind Rating190 KM/Hr.
Overall Length0.70 Meter
Shipping Length0.75 Meter
Radiating MaterialHigh Quality Copper
Maximum Mount Pipe Diameter 51 mm (2 Inches)
Radome MaterialUV Resistant ABS
Radome Outer Diameter110 mm
Gross Weight3 Kgs.

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