D-Helix™ antenna HX-CH7603A

The HX-CH7603A built-in D-Helix™ antenna is designed for high-precision tracking of satellites at low elevations. It provides continuous, reliable GNSS signal reception and supports GPS, GLONASS, Galileo, BeiDou, QZSS and SBAS, making it ideal for applications in demanding environments such as UAV monitoring, GIS surveying and crop protection.

Advanced D-QHA technology

Harxon's D-QHA technology improves the ability to track satellites at low elevation. It provides stable wide-angle circular polarization (WACP) and minimizes deviations in the antenna phase center (PCV), resulting in precise positioning accuracy.

Tracking in difficult environments

The D-Helix™ antenna can track visible satellites even in difficult conditions, providing accurate and reliable data. Its ability to maintain high zenith gain when tracking low elevation satellites makes it ideal for applications where the sky is partially obscured, such as in tree lines.

Strong immunity to interference

The LNA provides excellent out-of-band noise rejection, reducing interference from electromagnetic interference. This ensures the stability and reliability of GNSS signals and prevents signal interruptions during UAV operations near power poles or in other challenging environments.

Harxon's most robust precision antenna

The HX-CH7603A features an aerodynamic design and a robust IP67-certified housing, making it Harxon's most durable precision antenna. It is designed for use in harsh environments and features an SMA connector for easy integration.

Important functions

• Supports GPS, GLONASS, Galileo, BeiDou, QZSS and SBAS
• D-QHA technology ensures excellent tracking of satellites at low elevation
• Stable phase center guarantees positioning accuracy in the millimeter range
• High noise immunity for harsh environments
• Lightweight design (38 g) for lower energy consumption

parameter	details
Received signals	GPS (L1/L2)
	GLONASS (L1/L2)
	GALILEO (E1)
	BDS (B1/B2/B3)
	QZSS (L1/L2)
	SBAS (L1)
nominal impedance	50Ω
polarization	RHCP
axial ratio	≤3dB
amplification at the zenith (90°)	4.2dBi (1205-1278 MHz), 3.8dBi (1559-1610 MHz)
LNA amplification	33dB (typical)
noise figure	≤1.5dB
output/input VSWR	≤2.0
operating voltage	+3.3 to +12VDC
operating current	≤55mA
Group Delay Ripple	<15ns
Dimensions	Ø40 x 75.2mm
Connection	SMA connector
Weight	≤38g
fastening	3-M2.5\*7
operating temperature	-40°C to +70°C
storage temperature	-40°C to +70°C
humidity	95% non-condensing
water/dust resistance	IP67
certification	CE, RoHS

Download data sheet