Shure UA874 Active Directional UHF Antenna

$35.00

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

Features

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

Description

The Shure UA874 uses a log periodic dipole array to offer enhanced reception when directed toward the desired coverage area. An integrated amplifier and four gain settings compensate for varying degrees of coaxial cable signal loss. The UA874 can be mounted on a microphone stand, suspended from the ceiling, or mounted to a wall using the integrated swivel adapter.

Features

• Low-noise signal amplifier compensates for insertion loss in coaxial cable

• Compatible with Shure wireless receivers and antenna distribution systems that provide 10–15 V DC bias

• Integrated threaded adapter mounts easily to microphone stands

• Four-position gain selector switch

• Shure quality, ruggedness, and reliability

Note: The antenna will not operate without 10-15 V DC bias. This is required even at -6 dB and 0 dB (“passive”) gain settings.

Specifications

Connector Type

BNC, Female

Impedance
50 Ω

Power Requirements

10 to 15 V DC bias from coaxial connection, 75 mA

RF Frequency Range

UA874US 470–698 MHz

UA874E 470–790 MHz
UA874WB 470–900 MHz
UA874Z16 1240–1260 MHz
UA874Z17 1492–1525 MHz
UA874Z18 1785–1805 MHz
UA874X 925–952 MHz
UA874XA 902–960 MHz

Reception Pattern
3 dB Beam Width
70 degrees

Third-order Overload Intercept Point (OIP3)
>30 dBm

Antenna Gain
On Axis
7.5dBi

Signal Gain
±1 dB, Switchable
+12 dB, +6 dB, 0 dB, −6 dB

RF Overload LED Threshold
−5 dBm
RF overload LED does not operate for passive gain settings

Operating Temperature Range
−18°C (0°F) to 63°C (145°F)
Storage Temperature Range
−29°C (-20°F) to 74°C (165°F)

Calculating Gain Settings
To calculate the required gain setting, obtain the cable manufacturer’s specification for signal loss. The rated loss usually varies with RF frequency in addition to cable length. Multiply the per 100 feet rating of the cable by cable length to determine signal loss, and add gain as necessary to compensate. For example: a 50 ft. cable with rated loss of -12dB per 100 ft. would calculate as (-12dB/100)*50 = -6dB and require +6dB of gain for a sum total of 0 dB loss. For more information, visit http://www.shure.com

Additional information

Weight1 lbs
Connector Type

BNC, Female

Impedance

50 Ω

Power Requirements

10 to 15 V DC bias from coaxial connection, 75 mA

Operating Temperature Range

−18°C (0°F) to 63°C (145°F)

Storage Temperature Range

−29°C (-20°F) to 74°C (165°F)

Third-order Overload Intercept Point (OIP3)

>30 dBm