The Shure UA874 is a UHF active directional antenna that delivers improved wireless reception. It uses a log periodic dipole array to produce a Read moreGo to the glossary" data-html="true" data-original-title data-toggle="popover" style="color:#454545;border-bottom:1px dotted rgb(0, 0, 0);cursor:pointer;" title>cardioid pattern towards the desired coverage area with greater rejection of RF signals outside the coverage area when compared to standard ½ wave Read moreGo to the glossary" data-html="true" data-original-title data-toggle="popover" style="color:#454545;border-bottom:1px dotted rgb(0, 0, 0);cursor:pointer;" title>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.

RF Read moreGo to the glossary" data-html="true" data-original-title data-toggle="popover" style="color:#454545;border-bottom:1px dotted rgb(0, 0, 0);cursor:pointer;" title>Frequency Range

• UA874US: 470-698 MHz
• UA874WB: 470-900 MHz
• UA874XA: 902-960 MHz

• onnector 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: 316mm x 359mm x 36mm (H x W x D)
• Weight: 317g (11.2 oz)

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

                                                                        UA874X    925–952 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

Dimensions                                                      UA874    316 x 359 x 36 mm (H x W x D)

                                                                          UA874X  224 x 234 x 36 mm (H x W x D)

Weight                                                                        UA874   317 g (11.2 oz.)

                                                                                    UA874X 213 g (7.5 oz.)

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

(-20°F) to 74°C (165°F)