This listing is for one like-new/unused/NOS Shure PA821B Wireless System Antenna Combiner (470 - 865 MHz).

This unit was originally purchased as a backup, but never ended up getting used. It has been in a climate-controlled storage unit and has never been installed. The box has been opened only to verify its contents. Otherwise, everything else is sealed and in the same condition as it would be if purchased brand new.

This package includes the following items:

• (1) PA821B Antenna Combiner Unit: The main 8-channel active combiner rackmount device.

• (8) 2 ft. Coaxial Cables (RG58C/U): BNC-to-BNC cables used to connect up to eight PSM transmitters to the combiner inputs (Model UA802).

• (1) 1 ft. Jumper Cable: A BNC-to-BNC jumper cable used for the expansion port when daisy-chaining multiple combiners (Model 95E2035).

• AC Power Line Cord: An IEC power cable appropriate for the region of purchase (e.g., 120V for US, 230V/240V for other regions).

The cost of shipping ensures that this item will be securely shipped, fully insured, and will require a signature by anyone who receives it.

Feel free to write with any questions or offers.

ABOUT:

The Shure PA821B is an active broadband antenna combiner designed to optimize RF management for professional audio environments using Shure PSM (Personal Stereo Monitor) wireless systems. It allows up to eight transmitters to share a single antenna system, significantly reducing rack clutter and improving signal reliability.

The unit combines the RF outputs from up to eight PSM transmitters into a single RF output to feed one transmit antenna. This active combining process reduces intermodulation distortion and minimizes dropouts caused by multipath interference, ensuring cleaner audio reception in complex wireless setups. It is fully compatible with Shure PSM 300, PSM 900, and PSM 1000 systems.