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Shure UA874 UHF Active Directional Antenna

Active directional UHF antenna with integrated amplifier for improved wireless signal reception.

Key Features:

  • Compatible with all Shure wireless receivers and antenna distribution systems that provide 12V DC bias
  • Four-position gain selector switch
  • Low-noise signal amplifier
  • Mounts easily to microphone stands

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    Product Code: 100260339


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    The UA874 replaces the UA870. UA874 uses a log periodic dipole array to produce a cardioid pattern towards the desired coverage area with greater rejection of RF signals outside the coverage area when compared to standard ½ wave omnidirectional antennas. An integrated amplifier with four gain settings compensate for varying degrees of coaxial cable signal loss.

    The UA874 can be stand-mounted, suspended from the ceiling, or wall-mounted using the included swivel adapter bracket.

    • Connector Type:  BNC, Female
    • Impedance: 50 ohms
    • Power Requirements: 10 to 15 V DC bias from coaxial connection, 75 mA
    • Reception Pattern: 70 degrees
    • Third-order Intercept Point: >30 dBm
    • Antenna Gain (On Axis): 7.5 dBi
    • Signal Gain +/- 1dB: Switchable
      • Active: +12 dB, +6 dB
      • Passive: 0 dB, -6 dB
    • RF Overload LED Threshold: -5 dBm
    • Dimensions: 316 mm x 359 mm x 36 mm (H x W x D)
    • Weight: 317g
  • Compatible with all Shure wireless receivers and antenna distribution systems that provide 12V DC bias
  • Four-position gain selector switch
  • Low-noise signal amplifier compensates for transmission loss in coaxial cable
  • Integrated threaded adapter mounts easily to microphones stands
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