Shure PA821 Antenna Combiners


Shure PA821B Antenna Combiners


The Shure PA821 Antenna Combiner is designed to optimize RF management for Shure PSM Personal Stereo Monitor systems. It can be used when multiple systems are required for monitoring on stage, theater, and rehearsal applications.

The combiner efficiently optimizes up to eight PSM transmitters (sold separately) when racked in a central location, while also reducing rack clutter. It is built with LED indicators for signal overload and signal presence. Additionally, the unit’s fan design improves thermal efficiency and ambient noise.

Combines up to eight PSM transmitters to a single antenna set
Improved intermodulation artifacts for cleaner RF environment
Reduces rack clutter
Daisy-chain up to 2 combiners with the expansion port
LED indications of signal presence, signal overload
Improved fan design significantly improves thermal efficiency and ambient noise
UPC: 042406472166
SKU: N/A Categories: ,

Shure PA821 Specs

Impedance 50 Ohms
Operating Temperature Range 0 to 145°F (-18 to 63°C)
Power Requirements 100 to 240 VAC, 50-60 Hz
Current Drain 1.59 A (referenced at 100 VAC) (159 VA)
Power Consumption 143 W maximum
RF Input Specs
Connector Type BNC
Configuration Active
Impedance 50 Ohms
RF Gain 0 dB (±2 dB)
LED Indicator Minimum Detection Threshold: 2.5 dBm
Overload Threshold: >24 dBm
Main Outputs
Connector Type BNC
Impedance 50 Ohms
Expansion Features
Connector Type BNC
Configuration Passive
Impedance 50 Ohms
Insertion Loss <4 dB
RF Expansion Port Normal Operating Range 33 dBm (2 W)
Dimensions Not specified by manufacturer
Weight Not specified by manufacturer
Packaging Info
Package Weight 17.6 lb
Box Dimensions (LxWxH) 27.3 x 17.6 x 3.9″

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