Model QHA-1516 1500-1620 MHz 2 dBic Gain 
 

QUADRIFILAR HELIX ANTENNA

Design Features : QHA-1516 broadband omni-directional RHCP quadrifilar helix antenna is rugged all weather model, enclosed in a ABS radome, uses high class copper alloy and does not require any field tuning or adjustments. The compact size of RHCP omni-directional quadrifilar helix antenna allows easy handling, shipping and highly suitable for receiving, transmitting, scanning, monitoring, surveillance and jamming applications for upper L band including GPS L1 band without having the requirement of multiple antennas. Antenna termination fitted just below the NATO mounting flange for complete weather protection. Other type of mounting hardware / configuration can be supplied on request.

Constructions : The RHCP quadrifilar helix antenna is consisting of two (pair) vertical loop radiating elements at right angles to each other, twisted into a helix turns vertically and enclosed in ABS radome. The special “Teflon Dielectric Transmission Line” technique is used to handle high power handling capacity allowing smooth VSWR and typical 2dBi. gain over the entire 1500-1620 MHz. frequency band. The UV resistant ABS enclosure has excellent transparency for RF signals and enough strength to withstand specified wind loads. The stainless steel mounting hardware is supplied with the antenna. Cylindrical shell/enclosure is used for low wind loading and for minimal effect of ice formation on the antenna operation as well as providing an aesthetically pleasing appearance.

Electrical Specifications:
Frequency Range1500-1620 MHz
Gain2 dBic
Bandwidth1.50 - 1.62 Ghz
PolarizationCircular - RHCP or LHCP
Input Impedance50 Ohms
Radiation PatternOmni-directional
Beamwidth -3dB.120 Degrees (Vertical)
VSWR2:1
RF Power Handling Capacity500 Watts
Input TerminationN-Female
Lightning ProtectionDirect Ground

Mechanical Specifications:
MaterialsFiber Glass, Brass, Aluminum
Mounting Hardware -MaterialsMarine Grdae Stainless Steel
Wind Rating200 Km/Hr.
Mounting TypeNATO 4 holes or Customized
Overall Length200 mm
Shipping Length250 mm
Radome MaterialHigh Strength ABS
Radome Outer Diameter90 mm
Gross Weight1 Kg.

Environmental Specifications:
Operating Temperature(-) 35 to +70 Degrees Celsius
Storage Temperature(-) 40 to +80 Degrees Celsius
Humidity0 to 95% RH