Shure UA874US
Active Directional Antenna, 470-698 MHz


Our Price: $353.78
List Price: $374.00
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Experience improved wireless reception with the UA874. This UHF antenna uses a log periodic dipole array to produce a cardioid pattern toward the desired coverage area, achieving greater rejection of RF signals outside the area than standard ½ wave omnidirectional antennas.

An integrated amplifier with four gain settings compensates for varying degrees of coaxial cable signal loss.

The UA874 can be mounted on a mic stand with the integrated threaded adapter.

NOTE: The UA847 can be wall or ceiling mounted with multiple mounting adapter solutions. Please call for wall and ceiling-mount suggestions!


  • Compatible with all Shure wireless receivers and antenna distributionsystems that provide 12 V DC bias
  • Four-position gain selector switch
  • Low-noise signal amplifier that compensates for transmission loss incoaxial cable
  • Integrated threaded adapter that mounts easily to microphones stands
  • Legendary Shure build quality and reliability


  • 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: 0dB, -6 dB
  • RF Overload LED Threshold: -5 dBm
  • Dimensions: 316 mm x 359 mm x 36 mm (H x W x D)
  • Weight: 317 g (11.2 oz)
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