Ultimate network performance

Reliable and rugged geodetic-grade antenna for network applications

Product Info

High-accuracy GNSS choke ring antenna designed for all CORS environments

If you’re establishing a new CORS network or upgrading an existing service, the CR-G5 is the perfect antenna for all high-accuracy 24/7 GNSS signal reception needs.

  • High-end geodetic antenna
  • TA-5 vertical convex dipole antenna element for full-spectrum GNSS signal tracking
  • Topcon-designed choke ring ground plane
  • Environmentally robust and sealed
  • Improved phase-center stability in vertical over expanded GNSS frequency band


Build a network you can trust

Utilising an array of vertical convex dipoles, we designed the CR-G5 full choke ring antenna for high-accuracy networking applications based on our TA-5 full-spectrum GNSS element.

By providing full-wave tracking technology for existing and future GNSS signals, including Galileo, BeiDou and QZSS, the CR-G5 addresses the evolving requirements for reference networks and infrastructure monitoring applications.

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CR-G5 Specifications

Power and Electrical
Input Voltage
3 to 12 VDCVDC
Power Consumption
100 mA (typical)
Certifications and Standards
Dust/Water Protection
IP67 IEC 60529
Vibration Rating
Method 514.6, Broad band noise (random vibration), along each of 3 axes, Category 4, table 514.6C-IV
Operating Frequency Range
Lower Band:
1230±70 MHz (L5, E5B, E3, L2, G2, E4, E6)
Upper Band:
1565±50 MHz (E2, L1, E1, G1, OmniStar, SBAS, CDGPS)
Out-of-Band Rejection*
-60 dBc ***
-40 dBc ***
f < 1000 MHz:
-60 dBc ***
f > 1750 MHz:
-60 dBc ***
LNA Gain***
43 dB
Gain at Zenith (90º)
Lower band:
+7.5 dB ***
Upper band:
+5 dB ***
Gain Roll-Off (from Zenith to Horizon)
Lower band:
-16.5 dB ***
Upper band:
-13 dB ***
Noise Figure
1.0 dB ***
1.5 : 1
Differential Propagation Delay (typical)
Lower band: 3 ns (maximum)
Upper band: 3 ns (maximum)
Nominal Impedance
50 Ohm
*(1232 MHz ± 100 MHz)
**(1568.5 MHz ±150 MHz)
Physical and Environmental
Operating Temperature*
Operating: -50°C to 70°C
Storage Temperature
Storage: -55°C to 85°C
Shock Rating
Method 516.6, along each of 3 axes. Procedure I - Functional Shock, Table 516.6-I, Fig. 516.6-8, accelerative forces up to 40g
Salt Fog***
Drop Test
Repeated drops from the height of 1 m on concrete surface. All sides – top, bottom and border (with dome)
RoHS Compliant
Antenna without anti-snow Dome:
380 mm (D) x
155.5 mm (H)
Anti-snow Dome:
380 mm (D) x
292 mm (H)
SCIGN dome:
415 mm (D) x
287 mm (H)
4.9 kg
1.1 kg
Antenna & Dome:
6 kg
Connector Type
*Methods 501.4, 02.4
**Method 507.5
***Method 509.4
*****Topcon Anti-snow Spherical Dome
******Antenna w/ Topcon Anti-snow Spherical Dome

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