Multiband helical GNSS antenna
Multiband helical GNSS antenna
Helical antenna dimensions
helical simplertk2blite
helical simplertk2b
Helical antenna phase center

Lightweight helical antenna for multiband GNSS (IP67)

SKU AS-ANT2B-HEL-L1L2-SMA-00 Category Tags , ,


Availability: In stock

This product comes with 2 years worldwide warranty

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– RTK multiband external helical GNSS antenna with SMA connector

External multiband L1/L2/E5b helical GNSS antenna, with a weight below 18 grams, ideal for lightweight applications like drones.

Good to know:
– Compatible with all simpleRTK2B boards as well as any other multiband GNSS receiver in the market
– Helical antennas are ideal for GNSS reception in strange attitudes (not always facing the sky)
– Integrates a SMA-male termination, no cable is needed although you can use our cable extenders
Be aware that if you plan to use the Pixhawk connector in the simpleRTK2B board, the helical antenna will block it, so you will need a cable extender.


2B Helical antenna

Antenna element

  • Supported positioning signal bands:
    • GPS: L1, L2
    • GLONASS: G1, G2
    • BeiDou: B1, B2
    • Galileo: E1, E5b
    • QZSS: L1, L2
  • Polarization: RHCP
  • Peak gain: 2dBi
  • Axial Ratio @ zenith: <3dB
  • Azimuth Coverage: 360 degrees
  • Impedance: 50 ohm


  • Supply voltage: 3-16V
  • Typical supply current @ 3V: 35mA
  • Average LNA gain: 33dB
  • Maximum Noise Figure: 1.5dB
  • Maximum VSWR: 2


  • Maximum length: 56mm
  • Weight: 18g
  • Mounting style: direct on SMA connector
  • Connector: SMA male


  • Operating Temperature: -40 to +85°C
  • Storage Temperature: -40 to +85°C
  • IP Rating: IP67
  • RoHS: Yes


Related tutorials:
  • RTK GNSS performance with extreme antenna positions
  • Want to learn more about GPS/RTK?

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