NovAtel VEXXIS GNSS-503 Antenna

NovAtel VEXXIS GNSS-503 Antenna

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The VEXXIS GNSS-503 antenna from NovAtel is a multi-frequency, high-performance, ruggedized antenna with an IP67 rating. Its intelligent enclosure design combined with multi-constellation and L-Band support makes it ideal for terrestrial applications.



The GNSS-503 antenna from NovAtel is designed with a low profile, aerodynamic enclosure, ideal for ground vehicles in applications such as agriculture, machine control, and mobile mapping. Magnetic mounts make the antenna easy to install or move between ground vehicle platforms. The combination of intelligent enclosure design along with multi-constellation and L-Band support makes it ideal for any terrestrial application.

The GNSS-503 has been thoroughly tested to withstand even the most challenging environments. It endured over 1000 hours of intense vibration testing to earn its MIL-STD-810G rating. It is also water-resistant under heavy rainfall or high-pressure spray, ensuring its long survivability under the toughest operating conditions.

The VEXXIS GNSS-500 series antennas provide outstanding circularly polarized, symmetric radiation patterns with superior multipath rejection performance. This is achieved with a patented, multi-point feeding network which provides uniquely low loss and frequency independent amplitude/phase balance. Strictly balancing signals and sequentially feeding the GNSS antenna at multiple points is the key to achieving remarkable performance.


  • Supports multi-frequency GPS, GLONASS, Galileo, BeiDou, QZSS, and IRNSS/NavIC signal reception
  • L-Band capable, supporting correction services such as TerraStar
  • Multi-point antenna feed provides stable phase center and enhanced multipath rejection
  • Designed for high-quality performance when used with NovAtel’s STEADYLINE technology
  • Low-profile design ideal for machine control applications

Technical Specifications

Signals Received
GPS:L1, L2, L5
Galileo:E1, E5a/b, E6
BeiDou:B1, B2, B3
QZSS:L1, L2, L5, L6
Pass Band
Upper Passband:1577.5 ± 32.5 MHz (typical)
Lower Passband:1232.0 ± 68.0 MHz (typical)
Out-of-Band Rejection
Band Edges ± 50 MHz:15 dB (typical)
Band Edges ± 100 MHz:25 dB (typical)
LNA Gain
Upper Passband:34 dB (typical)
Lower Passband:38 dB (typical)
Gain at Zenith (90°)
L1/B1/E1/G1/L-Band:+4.0 dBic (minimum)
L2/G2:+4.0 dBic (minimum)
G3/E5/B2:+3.5 dBic (minimum)
L5:+2.5 dBic (minimum)
L6/E6/B3:+1.0 dBic (minimum)
Gain Roll-Off (Zenith to Horizon)
Upper Passband:12 dB (typical)
Lower Passband:13 dB (typical)
Phase Centre Stability:<5.0 mm
Noise Figure:2.5 dB (typical)
VSWR:<eq;2.0 (typical)
L1-L2 Differential Propagation Delay:7 ns (maximum)
Group Delay Ripple:<15 ns
Nominal Impedance:50 Ω
Dimensions:155 mm (D) × 45 mm (H)
Weight:450 g
Connector:TNC female
Mounting:2 x magnetic mounts

2 x M4 screw inserts
Input Voltage:+3.3 to +18.0 VDC
Current:20 mA (typical)
Operating Temperature:-40°C to +85°C
Storage Temperature:-55°C to +85°C
Humidity:95% non-condensing
Salt Fog:MIL-STD-810G (CH1), 509.6
Water/Dust Resistance:IP67, IP69K
Random Operating Vibration:MIL-STD-810G(CH1), 514.7 (15 g), Annex E, Procedure 1, Category 24
Shock:MIL-STD-810G (CH1), 516.7 (40 g), Procedure 1
Bump:IEC 68-2-27 Ea (25 g)
Regulatory Compliance:FCC, CE
RoHS:EU Directive 2011/65/EU


NovAtel products come with a one-year warranty. The warranty, provided by NovAtel, covers any product which does not materially conform to NovAtel’s specifications or that is significantly defective in materials or workmanship, for a period of 12 months from the date of shipment. Accessories come with a similar 90-day warranty. NovAtel’s Extended Warranty Program provides the option to increase the duration of the warranty by an additional 12 or 24 months. The warranty is covered in more detail in the NovAtel Warranty and Return Policies page.

Why Buy from Us?

In business since 2004, Canal Geomatics is an authorized dealer for NovAtel 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 VEXXIS GNSS-503 antenna from NovAtel is available through Canal Geomatics. If you would like more information regarding this product, feel free to get in touch with us by completing the Request Pricing form.