HC977 Image


Antenna by Tallysman Wireless

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The HC977 for Tallysman is a Helical Antenna covering the GPS/QZSS-L1/L2/L5, GLONASS-G1/G2/G3, Galileo-E1/E5a/E5b, BeiDou-B1/B2/B2a frequency bands, as well as L-band correction services. It is designed for precision positioning and has 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). This antenna provides a gain of 28 dB when surface mounted or screw-mounted and has an axial ratio of less than 0.5 dB. The HC977 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.

The HC977 weighs only 42 grams and 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. Its embedded version is also available.

Product Specifications

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Product Details

  • Part Number
  • Manufacturer
    Tallysman Wireless
  • Description
    Triple-Band Helical GNSS Antenna for L1/L2/L5 Bands

General Parameters

  • Type
  • Amplifier Gain
    28 to 35 dB
  • Directionality
  • Application
    Galileo, GLONASS, GNSS, GPS, Military
  • Polarization
  • Axial Ratio
    0.5 dB
  • Frequency
    1.16 to 1.60 GHz
  • Gain
    1.5 to 2.5 dBi
  • Power
    0.1862 to 0.3236 W
  • Bands
    L Band
  • Industry
    Military, Satellite / Satcom
  • MIMO
  • VSWR
    1.5:1, 1.8:1
  • Mounting
    Direct Mount, Surface Mount
  • Connectors
  • Multi Band
  • Multi Port
  • Dimension
    44.2 mm (dia.) x 62.4 mm (h.)
  • Weight
    42 g
  • Operating Temperature
    -40 to 85 Degree C
  • Storage Temperature
    -50 to 95 Degree C
  • RoHS
  • Amplifier P1dB
    22.7 to 25.1 dBm
  • Current
    15 to 21 mA
  • Noise Figure
    1.6 dB
  • Voltage
    2.2 to 16 VDC

Technical Documents

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