Shure manual Model UA845 Antenna Distribution System, Controls and Connectors, System Features

MODEL UA845 ANTENNA DISTRIBUTION SYSTEM

The Shure Model UA845 is an amplified, UHF Antenna Distribu- tion System that expands a wireless microphone system by splitting one pair of antennas to multiple Shure UR4 wireless receivers. It also amplifies RF signals to compensate for insertion loss due to splitting signal power to mulitple output connectors. Each UA845 al- lows up to four receivers to use the same antennas. CASCADE connectors allows connections to a fifth receiver or a second UA845. There are also power connectors for powering Shure UHF Wireless systems.

Each system contains the following items:

•UA845 Antenna Distribution System

•Rack-mounting hardware

•Surface-mounting hardware

•Front-mounting antenna hardware

•18-in. Power OUTPUT Cord

•Power Cord

•Antenna cables for receiver connections

To get the most from this system, follow these guidelines:

•When using long runs of cable for remote-mounted antennas, use the UA830 In-Line RF Amplifier and the Shure Model UA825 or UA850 Remote Antenna Extension cables (RG-8/X or equivalent), which have low loss at UHF operating frequencies

•Locate multiple transmitters more than 3 m [10 ft] from receiving antennas

CONTROLS AND CONNECTORS

SYSTEM FEATURES

•Expandability. The UA845 UHF Antenna Distribution System is designed for large UHF wireless systems. Each unit allows up to four wireless receivers to use the same two antennas, and the CASCADE ports allow connection to a fifth receiver or a second UA845.

•Compatibility. The UA845 is compatible with all Shure wire- less microphone receivers operating within a compatible fre- quency range (see UHF Carrier Frequency Ranges in the Specifications section).

•CASCADE Ports. Two 50 Ω, BNC-type antenna CASCADE ports allow an additonal UA845 unit or a fifth wireless receiver. A large wireless system can be run off of a single pair of antennas.

•Power OUTPUT and OUT Connectors. Up to five (5) UR4 receivers can be daisy-chained and powered from a single source via the Power OUTPUT connectors.

•Low Noise and Intermodulation Distortion. The UA845 maintains clean signals with minimal distortion.

•Insertion Loss Compensation. Whenever a signal is split to multiple output ports, there is a loss in signal strength. The UA845 amplifies signals to compensate, ensuring a strong sig- nal to the receivers.

•Front-Mounted Antennas. The UA845 comes with hardware to front-mount the antennas, if desired.

Front Panel

UA845

UHF ANTENNA DISTRIBUTION SYSTEM

POWER INDICATOR	POWER ON/OFF
	SWITCH

Back Panel

1 2 3 4 5 3 4 5

1AC Power INPUT Connector.

2AC Power OUTPUT Connector. Each UA845 has a Power OUTPUT connector for daisy-chaining up to five

(5)Shure Model UR4 UHF Diversity Single or Dual Receivers to a single power source.

NOTE: This connector does not work for Shure ULX4 Receivers.

3ANTENNA IN Ports, Channel A & B. BNC-type connec- tors for antennas.

4RF CASCADE Connectors (Output connector 5), Channel A & B. BNC-type connectors for adding a fifth receiver, or additional UA845's, permitting more wireless receivers to be connected.

5RF OUTPUT Connectors, Channel A & B. BNC-type connectors for up to four wireless receivers.

ENGLISH 3