Shure Incorporated
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PA421B PA821B
Antenna Combiner
General Description
Shure antenna combiners actively combine RF outputs from multiple wireless IEM transmitters to a single antenna, improving
RF performance and conserving rack space.
Features
Reduction of intermodulation artifacts for cleaner RF environment
Wideband operation (470-865 MHz or 865-960 MHz)
Daisy-chain up to 2 combiners with the expansion port.
Provide DC power to compatible IEM transmitters.
LED indications of signal presence, signal overload and current draw
Model Variations
Shure antenna combiners for Shure IEM wireless personal monitoring systems are available in four-channel and eight-channel
rackmountable configurations.
Model
Frequency Range
RF Inputs
DC Power Outlets
PA421B
470-865 MHz
4
4
PA421BX
865-960 MHz
4
4
PA821B
470-865 MHz
8
0
PA821BX
865-960 MHz
8
0
The antenna combiners are available in two frequency ranges. The RF inputs allow up to four or eight (model dependent) IEM
systems to share a single antenna. The DC power outlets and supplied power cables allow you to distribute power to up to four
compatible IEM systems without requiring external power supplies.
Included Components