HC977XF

Triple-Band Helical Antenna + L-Band

More details

  • Very low noise preamp (2.5 dB typ.)
  • Axial ratio (≤ 0.5 dB at zenith)
  • LNA gain (28 dB typ. | 35 dB typ.)
  • Low current (25 mA typ. | 31 mA typ.)
  • ESD circuit protection (15 kV)
  • Invariant performance from 2.2 to 16 VDC
  • REACH, and RoHS compliant

The patented HC977XF helical antenna is designed for precision positioning, covering the GPS/QZSS-L1/L2/L5, GLONASS-G1/G2/G3, Galileo-E1/E5a/E5b, BeiDou-B1/B2/B2a, and NavIC-L5 frequency bands, including the satellite-based augmentation system (SBAS) available in the region of operation [WAAS (North America), EGNOS (Europe), MSAS (Japan), or GAGAN (India)], as well as L-Band correction services.

Calian’s eXtended Filter (XF) antenna technology has been designed to mitigate out-of-band signals and prevent GNSS antenna saturation. The radio frequency spectrum has become more congested as new LTE bands are activated and their signals or harmonic frequencies [e.g. 800MHz x 2 = 1600MHz (GLONASS-G1)] can affect GNSS antennas and receivers. In North America, planned Ligado signals at 1525 – 1536 MHz can especially impact GNSS antennas that support space-based L-band correction services (1539 – 1559 MHz). New LTE signals in Europe [Band 32 (1452 – 1496 MHz)] and Japan [Bands 11 and 21 (1476 – 1511 MHz)] have also been observed to interfere with GNSS signals. In addition, Inmarsat satellite communication (uplink: 1626.5 – 1660.5 MHz) can also affect GNSS signals. Calian’s custom XF filtering mitigates all existing signals and new Ligado and LTE signals, enabling the antennas and attached GNSS receivers to perform optimally.

Weighing only 42 g, the light and compact HC977XF features a precision-tuned helix element that provides excellent axial ratios and operates without the requirement of a ground plane, making it ideal for a wide variety of applications, including unmanned aerial vehicles (UAVs).

L-band CorrectionRequired
Antenna FrequencyTriple Band GNSS
MountDirect Screw
BrandCalian

ANT_HC977XF_DS

Data sheet for the Tallysman HC977XF GNSS Antenna

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ANT_HELICAL-MOUNTING_INS

Calian's Helical Antenna Mounting Instructions

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DescriptionPart-Number
HC977XF33-HC977XF-xx