UA870 UHF Active Directional Antenna

UHF Active Directional Antenna for U4S, U4D, ULXP, ULXS, UR4S and UR4D Receivers or UA844 or UA845 Antenna Distribution Systems.  See specifications for frequency ranges per individual model.

The Shure UA870 is an active UHF wireless directional antenna. It features a log periodic dipole array. When compared to an omnidirectional 1/2-wave antenna, the cardioid 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 amplifier is provided by a Shure U4S, U4D, ULXP, ULXS, UR4S and UR4D 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 diversity performance, use two UA870 antennas.

RF Frequency 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 . . . . . . . . . . . . . . . . . . . . . .  944-952MHz *

* Available in U.S. 

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)

Third Order Intercept Point (3OIP) at output

More than 30 dBm

Reception Pattern

Directional; Cardioid

3dB Beam Width: 100 degrees

Amplifier Gain Indicators

3 dB: Green LED

10 dB: Red LED

Connector

Female, BNC-type

Dimensions

UA870 (A, KK, MB, MC, UB, X): 8.90 in. (226 mm) H X 9.21 in. (234 mm) W X 1.60 in. (40.7 mm) D

UA870 (WB, USTV): 12.45 in. (316.2 mm) H X 14.15 in. (359.4 mm) W X 1.40 in. (35.5 mm) D

Stand Adapter

Positive-action, break resistant, adjustable from 0 to 90 degrees,

with standard 5/8 in. -27 thread

Net Weight (without cable)

UA870 (A, KK, MB, MC, UB, X): 8 oz. (227 grams)

UA870 (WB, USTV): 11.2 oz (317 grams)

CERTIFICATION

The Shure Model UA870 UHF Active Directional Antenna meet the essential requirements of the European R&TTE Directive 99/5/EC and is eligible to carry the CE marking. Meets Requirements of EMC Standard EN 301 489 Parts 1 and 9.

* 제품특징

UA870은 LPDA(대수주기 쌍극 안테나)를 특징으로 하는 액티브 UHF 무선 지향성 안테나이며, 무지향성 1/2 파장 안테나에 비해, UA870의 단일지향성 패턴은 지향범위 내에서 향상된 수신율과 지향범위 외의 RF 신호에 대한 보다 향상된 차단율을 제공한다.

동축 케이블의 신호 손실을 보상하기 위해, 사용자는 장착된 증폭기에서 3dB 또는 10dB 게인 설정이 가능하며 설정된 게인은 2가지 LED로 표시된다. 안테나 증폭기에 사용되는 12 Vdc 전원은 동축 게이블을 통해 연결된 UR4 수신기 또는 UA845 안테나 분배 시스템으로부터 공급받는다.

UA870은 스위블 어댑터 브라킷을 사용하여 마이크로폰 스탠드나, 천정 또는 벽에 부착할 수 있다. UA870은 날씨에 상관없이 사용할 수 있는 내구성을 가지고 있고 2대의 UA870 안테나를 사용하여 최상의 다이버시티 성능을 구현할 수 있다, 또한 대역폭이 한정된 버전도 제공한다.