Stonex SA1800 GNSS Choke Ring Antenna

Stonex SA1800 3D Choke Ring GNSS Antenna

The SA1800 3D GNSS choke ring antenna from Stonex is now available starting at $5,685 for a limited time. Please complete the Request Pricing form for an official quote.



The SA1800 3D GNSS choke ring antenna from Stonex has a unique design that ensures an excellent multipath reduction performance across all GNSS frequency bands including L-Band. Due to its sub-millimeter phase center stability, it is ideal for applications such as CORS stations, bridge and building deformation monitoring or geological monitoring.

The ability to receive low elevation signals with high gain and wide beam width makes SA1800 an excellent choice for tracking visible satellites while also providing stable and precise GNSS data in complex environments, such as obstructed environment of tree lines or construction.

The antenna LNA features an excellent out-of-band rejection performance, which can suppress the EMI, providing stable and reliable GNSS signals. The Stonex SA1800 antenna effectively avoids disconnections when receivers are being interfered with by wireless communication systems, for example power grid, communication base station or radio modem applications.

The Stoenx SA1800 is well suited for use as a GNSS reference station. It has a cover made of Glass Fiber Reinforced Polymer (GFRP) material which makes it strong and durable while also protecting the inside antennas from dust and water.


  • High Phase Center Stability
  • Tracking Everywhere
  • Strong Anti-Interference Performance
  • Rugged

Technical Specifications

GPS:L1, L2, L5
BeiDou:B1, B2, B3
Galileo:E1, E2, E5a, E5b, E6
Nominal Impedance:50Ω
Axial Ratio:≤2dB
Gain at Zenith (90%):1205-1278 MHz: 6dBi (maximum)
1559-1615 MHz: 6dBi (maximum)
LNA Gain:50db (typical)
Noise Figure:≤2dB
Output/Input VSWR:≤2.0
Operation Voltage:+3.3VDC to +12VDC
Operating Current:60mA (maximum)
Group Delay Ripple:≤5ns
Dimensions:ɸ379mm x 312mm
Connector:TNC Female
Mounting:BSW 5/8 inch – 11 screw, depth ≥22mm
Operating Temperature:-45 °C – +85 °C
Storage Temperature:-55 °C – +85 °C
Humidity:95% non-condensing


The SA1800 3D choke ring GNSS antenna from Stonex 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.