Shure UA845SWB
Antenna/Power Distribution System, 470-952 MHz

The Shure Model UA845 is an amplified, UHF Antenna Distribution System that expands a wireless microphone system by splitting one pair of antennas to multiple Shure UR4 or Shure UC4 wireless receivers. It also amplifies RF signals to compensate for insertion loss due to splitting signal power to mulitple output connectors. Each UA845 allows 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 and UC Wireless systems. NOT FOR USE WITH ULX.

470-952 MHz system.

Features:

• Expandability: The UA845 UHF Antenna Distribution System is designed for large UHF or UHF-R 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 wireless microphone receivers operating within a compatible frequency range (see UHF Carrier Frequency Ranges in the Specifications section).
• CASCADE Ports: Two 50 O, BNC-type antenna CASCADE ports allow an additional 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) U4 or UR4 receivers can be daisy-chained and powered from a single source via the Power OUTPUT connectors. Up to four (4) UC4 receivers can be powered from the UA845 using the 12 Vdc OUT 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 signal to the receivers.
• Front-Mounted Antennas: The UA845 comes with hardware to front-mount the antennas, if desired.

Specifications:

Distributed Output Level (Gain)
Models UA845-UA, UB, MA, MB, KK, MC:
3.5 dB typical, 2.0 dB to 5.0 dB from antenna input (Output ports 1–4)
0.5 dB typical, –1.0 dB to 2.0 dB from antenna input (Cascade port)
Models UA845-US, UK, E, and SWB:
3 dB typical, 0 dB to 3.5 dB from antenna input (Output ports 1–4)
1 dB typical, –1.6 dB to +1.8 dB from antenna input (Cascade port)

Output Connector Isolation
Greater than 25 dB

Third Order Intercept Point (3 OIP)
Typical 24 dBm

Input/Output AC Line Voltage
100 to 240 Vac, 50/60 Hz, unswitched

DC Output Voltage
12 Vdc, 4 connectors

Impedance
50 O

Operating Temperature Range
–7° C (+20° F) to 49° C (+120° F)

Overall Dimensions
44.5 mm high x 482.6 mm wide x 295.3 mm deep
(1 3/4 x 19 x 11 5/8 inches)

Net Weight
3.32 Kg (7 lbs, 5 oz)

Input/Output Antenna Connector Type
BNC-type

AC Power Consumption
15 W per unit typical. When used with 4 UC4's, 55 W max.