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Septentrio PolaNt Choke Ring B3/E6 GNSS Antenna

The PolaNt Choke Ring B3/E6 is a high precision geodetic multi-frequency multi-constellation choke ring antenna for use with Septentrio's PolaRx family of high performance multiple-frequency GNSS reference receivers. It supports current and planned GNSS signals including BeiDou B3 and Galileo E6.



Built of aluminum, the PolaNt Choke Ring B3/E6 is a full GNSS high precision antenna designed for reference stations. It is recognized for its reliability and durability in harsh conditions. Featuring low-noise amplifiers, the PolaNt is capable of multi-frequency reception (GPS, GLONASS, Galileo, BeiDou, NavIC, QZSS and SBAS) and of multipath mitigation by attenuating reflected GPS signals thus significantly improving the reliability and accuracy of your reading.

The PolaNt Choke Ring B3/E6 antenna incorporates low-noise amplifiers, powerful filters for out-of-band interference rejection combined with superior multipath rejection and a high phase centre stability.

It is a competitive alternative for Dorne & Margolin based anteannas and is designed for high-end applications and reference station operations. The sealed radome allows reliable signal reception even in difficult conditions.


  • Support for current and planned GNSS signals including GPS, GLONASS, Galileo, BeiDou, IRNSS, QZSS and SBAS
  • BeiDou B3 and Galileo E6 are supported
  • High phase center stability
  • IGS calibration available

Technical Specifications

GNSS Frequencies
GPS: L1, L2, L5
Galileo: E1, E5ab, E6
BeiDou: B1, B2, B3
SBAS: L1, L5
QZSS: L1, L2, L5, L6
L-Band: MSS
Gain: 39 ± 2 dB
Noise Figure: 2.6 dB max
Input Voltage: +4.2 to +15 VDC
Current: +465 mA (typ)
Power Handling: 1 W
Impedance: 50 Ω
VSWR: ≤ 2.0:1
Weight: 5 kg/11.02 lb
Diameter: 376 mm/14.8 in
Connector: N-Type Female
Polarization: RHCP
Axial Ratio: 3 dB max
Operating Temperature: -55°C to +85°C, -67°F to +185°F
Designed To: DO-160D
IGS Reference: SEPCHOKE_B3E6
Certification: CE, RoHS, WEEE


The Septentrio PolaNt Choke Ring B3/E6 GNSS antenna can be ordered through TerrisGPS. Please feel free to get in touch with us using the Request Pricing form if you would like more information.

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Client Testimonials

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"Thank you for your prompt service. All seems to be working well again. Your techs were very helpful with the troubleshooting."
J.O. - Ground Navigation
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F.A. - Survey Industry

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