UA870 UHF Active Directional Antenna
- Description
- Specs
- Downloads
Description:
The Shure UA870 is an active UHF wireless directional antenna. It features a log periodic dipole array. When compared to an omnidirectionalEqually sensitive to sound from all directions, but cannot be „aimed“ to isolate one area.
Read moreGo to the glossary 1/2-wave antenna, the cardioidPicks up most sound in front of the microphone and some from the sides. It is less susceptible to feedback in high volume environments.Read moreGo to the glossary pattern provided by the UA870 offers enhanced reception of the desired coverage area and greater rejection of RF signals outside the coverage area.
To compensate for coaxial cable signal loss, the UA870 has an on-board amplifier that offers user selectable 3 or 10 dB gain. The gain setting is indicated by two LEDs. Remote 12 Vdc power for the antenna amplifi er is provided by a Shure UR4 or ULX Receiver or a Shure UA845 or UA844 Antenna Distribution System through the connecting coaxial cable.
The UA870 can be mounted on a microphone stand, suspended from the ceiling, or mounted to a wall using the integrated swivel adapter bracket. The UA870 is weather resistant for use outdoors. For best diversityWireless “diversity” receivers feature two separate antennas for consistent signal reception.Read moreGo to the glossary performance, use two UA870 antennas.
RF FrequencyThis is how many times a sound or radio wave oscillates in one second.Read moreGo to the glossary Range
- UA870A: 782-810 MHz
- UA870KK: 838-862 MHz
- UA870MB: 800-830 MHz
- UA870MC: 774-782 MHz
- UA870UB: 692-716 MHz
- UA870WB: 470-900 MHz
- UA870USTV: 470-698 MHz
- UA870X: 944-952 MHz
Specs:
- Power Source: Remote 12 Vdc from coaxial cable connection to receiver or antenna distribution system.
- Power Consumption:
- UA870 (A, KK, MB, MC, UB, X): 0.81 W (12 Vdc)
- UA870 (WB, USTV): 68W (12Vdc)
- Antenna Gain: 7 dB typical (on axis)
- Amplifier Gain:
- UA870 (A, KK, MB, MC, UB, X):
- Gain Switch at 3 dB: 3 dB ± 2 dB
- Gain Switch at 10 dB: 10 dB ± 2 dB
- UA870 (WB, USTV)
- Gain Switch at 3 dB: –2, +1.5 dB
- Gain Switch at 10 dB: –1 dB, +3.0 dB
- UA870 (A, KK, MB, MC, UB, X):
- Third Order Intercept Point (3OIP) at output: More than 30 dBm
- Reception Pattern:
- Directional; CardioidPicks up most sound in front of the microphone and some from the sides. It is less susceptible to feedback in high volume environments.Read moreGo to the glossary
- 3dB Beam Width: 100 degrees
- Directional; CardioidPicks up most sound in front of the microphone and some from the sides. It is less susceptible to feedback in high volume environments.
- Amplifier Gain Indicators:
- 3 dB: Green LED
- 10 dB: Red LED
- Connector: Female, BNC-type
- Dimensions:
- UA870 (A, KK, MB, MC, UC, X): 226 mm x 234 mm x 40.7 mm
- UA870 (WB, USTV): 316.2 mm x 359.4 mm x 35.5 mm
- Stand Adapter: Positive-action, break resistant, adjustable from 0 to 90 degrees, with standard 5/8 in. -27 thread
- Net weight:
- UA870 (A, KK, MB, MC, UC, X): 227 g
- UA870 (WB, USTV): 317 g
