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Key Features
What's Included
- Combines up to eight PSM transmitters to a single antenna set for improved RF networking and reduced rack clutter
- Wideband operation (470-865 MHz)
- Quieter fan for significant reductions in ambient unit noise, especially useful for installation work
Key Features
What's Included
- Combines up to eight PSM transmitters to a single antenna set for improved RF networking and reduced rack clutter
- Wideband operation (470-865 MHz)
- Quieter fan for significant reductions in ambient unit noise, especially useful for installation work
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Become an ADI CustomerKey Features
What's Included
- Combines up to eight PSM transmitters to a single antenna set for improved RF networking and reduced rack clutter
- Wideband operation (470-865 MHz)
- Quieter fan for significant reductions in ambient unit noise, especially useful for installation work

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Overview
Specifications
Documents
Product Overview
Shure PA821B Antenna Combiners are complementary accessories for Shure PSM Personal Stereo Monitor systems. When multiple systems are required for monitoring applications, the PA821B combiners quietly and efficiently optimize RF management for up to eight PSM transmitters when racked in a central location, while also reducing rack clutter. (Directly replaces PA821A). The PA821B active broadband antenna combiner streamlines the simultaneous operation of many PSM systems at a venue. The PA821B combines the RF outputs from up to eight PSM transmitters into one RF output to feed a single transmit antenna. This provides significantly improved reception quality due to reduced intermodulation distortion and dropouts due to multipath interference.
Main Features
- Combines up to eight PSM transmitters to a single antenna set for improved RF networking and reduced rack clutter
- Wideband operation (470-865 MHz)
- Quieter fan for significant reductions in ambient unit noise, especially useful for installation work
- Temperature-sensitive fan power for significant reductions in ambient unit heat
- 8 Input LED Signals (green when active; off when inactive)
- LED indications of signal presence, signal overload
General Information
Name: Shure PA821B 8-Port PSM Antenna Combiner, 470-865 MHz
Category: Shure, Pro AV, Commercial Audio, Pro Audio Processors
UPC Code: 042406472166
Country of Origin: Mexico. Country of origin is subject to change.
Specifications
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ADI Part Number SB-PA821B Brand Name Shure Manufacturer Shure, Inc Manufacturer Part Number PA821B Product Model PA821B Product Name PA821B Eight-Port PSM Antenna Combiner, 470-865 MHz Product Type RF Combiner
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Input Voltage 120 V AC, 230 V AC
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Country of Origin MX Environmental Certification WEEE Environmentally Friendly Yes Package Contents - PA821B Eight-Port PSM Antenna Combiner, 470-865 MHz
- IEC Power Cord
- 4 x 2 ft. DC Power Output Cables
- 4 x 22 in. Coaxial Cables, BNC Terminated
- 1 x 11 in. Coaxial Cable, BNC Terminated