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Item #: HC771

HC771 Single Band Helical Antenna

The Tallysman HC771 is a lightweight single band helical antenna covering GPS/QZSS L1, GLONASS G1, Galileo E1, and BeiDou B1 frequency bands, as well as SBAS (WAAS, EGNOS & MSAS).

SKU: 33-HC771 Categories: , Manufacturer: Tallysman Wireless

Tallysman HC771 Single Band Helical Antenna

Ideal for a wide variety of applications including Unmanned Aerial Vehicles (UAVs), the lightweight Tallysman HC771 weighs only 24 grams with a precision-tuned helix element that provides excellent axial ratios and operates without the requirement of a ground plane.

The HC771 features an industry-leading low current, Low Noise Amplifier (LNA) that includes an integrated low-loss pre-filter to protect against harmonic interference from high amplitude interfering signals, such as 700 MHz band LTE and other near in-band cellular signals. It is protected by a robust, military-grade plastic enclosure with an integrated SMA connector for screw-on mounting that securely seals the unit with an O-ring, complying with IP67 standards. The enclosure also provides three threaded holes in the base for secure attachment of the unit.


  • Very low noise pre-amp, 2.5 dB
  • Axial ratio: <= 2 dB max.
  • LNA gain 28 dB typ.
  • Low current: 12 mA typ.
  • ESD circuit protection: 15 kV
  • Invariant performance from: +2.5 to 16 VDC


  • Extremely Lightweight (24 g)
  • Ideal for L1 RTK surveying systems
  • Great multipath rejection
  • Increased system accuracy
  • Excellent signal to noise ratio
  • IP67, REACH, and RoHS compliant


HC871 Drawing

Tallysman HC771 Single Band Helical Antenna Data Sheet

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