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 Model AHQ-1417-21 1400-1700 MHz 21 dBic Gain 


Design Features: The AHQ-1417-21 quad stacked helical antenna uses extended stubs to provide the greater gain while maintaining the wider beam-width and designed to provide wideband directional transmission/reception of radio signals from 1400-1700 MHz bands The AHQ-1417-21 quad stacked helical antenna is highly suitable to provide the uninterrupted communications in the tunnels. 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 AHQ-1417-21 Quad Stacked Helical Antenna is supplied with a specially designed mounting arrangement to hold the antenna at back end by using stainless steel mounting brackets to withstand the higher wind rating. The AH-1417-21 helical antenna is supplied with a specially designed mounting arrangement for steering the antenna in both planes, 360 degrees in Azimuth and 90 degrees in Elevation for terrestrial and satellite link. Both LHCP and RHCP models are available. The part number for LHCP version is AHQ-1417-21-LHCP and AHQ-1417-21-RHCP is for RHCP version.
Constructions: The AHQ-1417-21, like all our AH series helical antennas, utilizes right hand circular polarization to minimize the effects of multipath interference. The AHQ-1417-21 Helical Antenna is heavy duty, broadband and rugged helical antennas, supplied with fiberglass radome to protect the antenna from environment. The radiating element of high power helical antenna is made of high quality high strength enameled coated copper wire and winding is secure alongside wall of fiber glass enclosure/hosing/radome to keep the helical winding/radiating element to its appropriate location to prevent RF inter-modulation. The antenna is designed as per MIL-STD-810G standards. Quad Stacked Helical Antenna is supplied with power splitter/combiner, phasing harness cables, stacking pipe and mounting hardware to mount the dual stacked helical antenna on tower/mast.

Electrical Specifications:
Frequency Range1400-1700 MHz
Gain21 dBic
Bandwidth1.4-1.7 GHz
Antenna TypeHelix
PolarizationCircular - LHCP or RHCP
Input Impedance50 Ohms
Radiation PatternDirectional
Beamwidth -3dB.14+/-2 Degrees - Azimuth
Beamwidth -3dB.14+/-2 Degrees - Elevation
Front to Back Ratio35 dB. Typical
VSWR - Equal To or Better Then< 2:1
RF Power Handling Capacity300 Watts
Input TerminationN-Female

Mechanical Specifications:
Antenna MaterialsAluminium, Copper & ABS
Mounting Hardware -MaterialsStainless Steel
Wind Rating180 Km/Hr.
Overall Length900 mm
Shipping Length1100 mm
Radiating MaterialHigh Quality Copper
Maximum Mount Pipe Diameter 38-62 mm (1.5-2.25 Inches)
Radome MaterialHigh Strength ABS
Radome Length810 mm
Gross Weight15 Kg.

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