Shure PA821BX Eight-channel Antenna Combiner, 865-960 MHz

Product Overview

The Shure PA821BX antenna combiner is an eight-channel PSM antenna combiner for commercial AV installations operating large counts of Shure personal monitoring systems in the 865-960 MHz band. It merges the RF outputs of up to eight PSM transmitters onto a single transmit antenna, reducing intermodulation distortion and multipath dropouts. For integrators designing in-ear monitor RF distribution in high-density venues, this 865-960 MHz wireless monitor combiner is the backbone of scalable antenna infrastructure. It is the higher-band counterpart to the 470-865 MHz PA821B.

Product Description

The PA821BX is an active broadband antenna combiner that streamlines simultaneous operation of many PSM systems at one venue in the 865-960 MHz range. Rather than mounting a transmit antenna for every transmitter, the integrator routes up to eight PSM transmitters into the combiner and feeds a single shared antenna. This eight-channel PSM antenna combiner is suited to large-scale wireless monitoring deployments where rack space and RF coordination are at a premium. Combining outputs into one antenna feed lowers the antenna-to-antenna interference that degrades dense wireless systems. The PA821BX is compatible with Shure PSM 300, PSM 900, and PSM 1000 systems operating in its frequency band. It is engineered for rack-mount integration alongside other commercial-grade wireless infrastructure. For smaller systems, the four-channel Shure PA421BX covers up to four transmitters, while the PA821B serves 470-865 MHz deployments.

Key Features

• Eight-to-One RF Combining — Merges the outputs of up to eight PSM transmitters into a single antenna feed for large wireless monitoring systems.
• 865-960 MHz Coverage — Supports broadband operation across the 865-960 MHz range for regions and deployments using higher frequencies.
• Reduced Interference — Lowers intermodulation distortion and multipath dropouts compared with running many independent transmit antennas.
• Active Broadband Design — The active circuit helps offset combining losses so transmit signal strength is maintained across all eight channels.
• Broad Shure Compatibility — Works with PSM 300, PSM 900, and PSM 1000 transmitters operating in the 865-960 MHz band.
• Rack-Ready Integration — Designed for installation in commercial AV equipment racks alongside other wireless components.

Typical Applications

• House of worship
• Auditorium
• Broadcast studio
• Multi-purpose room

Technical Specifications

Frequently Asked Questions

What frequency band does the PA821BX cover?
It operates across the 865-960 MHz range, serving deployments that use higher frequencies than the 470-865 MHz PA821B.

How many transmitters can it combine?
Up to eight PSM transmitters are merged into one antenna feed, making it suited to large multi-channel monitoring systems.

Which Shure systems are compatible?
It works with PSM 300, PSM 900, and PSM 1000 personal monitoring systems operating in its frequency band.

When should I choose the PA821BX over the PA421BX?
Choose the PA821BX when you need to combine more than four transmitters; the four-channel PA421BX fits smaller systems.

How does it integrate into an AV rack?
The PA821BX is built for rack-mount installation and connects between your PSM transmitters and a shared transmit antenna using standard coaxial antenna cabling.

Is support available for integration?
The PA821BX is covered by Shure's standard manufacturer warranty, and Creation Networks can assist with specification and integration into commercial AV systems.