RingAnt-G3T-JS GNSS Choke Ring Antenna

JAVAD RingAnt-G3T-JS GNSS Choke Ring Antenna

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The RingAnt-G3T-JS GNSS choke ring antenna from JAVAD GNSS combines their GrAnt antenna with a choke ring design, and utilizes their J-Shield filters for signal protection and improved receiver performance.



The RingAnt-G3T-JS GNSS choke ring antenna from JAVAD GNSS is their GrAnt antenna mounted on a choke ring. The antenna cable can be connected via the standard TNC (N-type optional) connector on its side.

The RingAnt-G3T-JS can track GPS, GLONASS, Galileo, BeiDou, WAAS, EGNOS, MSAS, GAGAN and QZSS signals.

J-Shield is the filter that protects GPS L1, Galileo L1, and GLONASS L1 bands. It brings in all the useful signals intact and rejects out-of-band signals with a slope of about 12 dB/Mhz.

Similarly, it is the filter that protects GPS L2, GPS L5, GLONASS L2, GLONASS L3, and Galileo L5 and has a slope of about 9 dB/MHz.

These filters have been extensively tested with five different innovative tests and prove that the filters also improve the performance of GNSS receivers.

Technical Specifications

Capability:GPS L1/L2/L2C/L5, GLONASS L1/L2/L3, Galileo E1/E5ab, WAAS L1/L5, EGNOS, MSAS, GAGAN, QZSS L1/L2/L2C/L5
Frequency:1565-1610 MHz, 1164-1254 MHz
Antenna Gain:1565-1610 MHz, 6.0 dB typical
1164-1254 MHz, 5.0 dB typical
Axial Ratio Output:2.0 dB max
Impedance:50 Ohm
LNA Gain:33±3 dB, 43±3 dB (optional)
Noise Figure:2.8 dB typical
Input Voltage:+4.5 to +15.0 VDC
Power Consumption:0.46 W max, 0.6 W max (40 dB LNA gain)
Current:90 mA @ 5.0V typical, 97 mA @ 5.0V typical (40 dB LNA gain)
Operating Temperature:-45°C to +85°C
Storage Temperature:-50°C to +85°C
Humidity:Waterproof, 100% non-condensing, IP68
Drop:Survives a 0.5 m drop onto a hard surface
Shock:MIL-STD-810H Method 516.8 Functional Procedure I
Vibration:MIL-STD-810H Method 514.8 Procedure I, Category 4
EMC:Complies with ETSI EN 301 489-1 V2.2.3 (2019-11), Complies ETSI EN 301 489-19 V2.1.1 (2019-04)
Antenna Type:Microstrip
Connector:TNC; N-type (optional)
Dimensions:Ø326 mm; H=88 mm
Weight:2.7 kg
Enclosure:Radome: ABS, Base: Aluminum
Mounting:5/8-11 inches mount
Stability:Antenna withstand wind blast up to 200 km/h in operation

Why Buy from Us?

In business since 2004, Canal Geomatics is an authorized dealer for JAVAD GNSS and has established itself as an industry-leading distributor of high-precision positioning products in North America. Our mission is to find the best solution for each unique application and extend premium support to ensure the long-term success of our customers. We offer both volume and reseller discounts for the majority of our product lines.


The RingAnt-G3T-JS GNSS choke ring antenna from JAVAD GNSS is available through Canal Geomatics. If you would like more information about this product, please feel free to get in touch with us by completing the Request Pricing form.