Shure PA421BX Four-channel Antenna Combiner, 865-960 MHz
Shure PA421BX Four-channel Antenna Combiner, 865-960 MHz is backordered and will ship as soon as it is back in stock.
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Shure PA421BX Four-channel Antenna Combiner, 865-960 MHz
Product Overview
The Shure PA421BX antenna combiner is a four-channel PSM antenna combiner for commercial AV installations operating Shure personal monitoring systems in the 865-960 MHz band. It merges the RF outputs of up to four PSM transmitters onto a single transmit antenna, reducing intermodulation distortion and multipath dropouts. For integrators handling in-ear monitor RF distribution in fixed-install venues, this 865-960 MHz wireless monitor combiner consolidates antenna infrastructure and improves signal reliability. It is the higher-band counterpart to the 470-865 MHz PA421B.
Product Description
The PA421BX is an active broadband antenna combiner that streamlines simultaneous operation of multiple PSM systems at one venue in the 865-960 MHz range. Rather than mounting a separate transmit antenna for every transmitter, the integrator routes up to four PSM transmitters into the combiner and feeds a single shared antenna. This four-channel PSM antenna combiner consolidates RF in the rack and frees panel space in dense equipment rooms. Combining outputs into one antenna feed lowers the antenna-to-antenna interference common to crowded wireless deployments. The PA421BX 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 higher channel counts, integrators can move to the eight-channel Shure PA821BX, or select the PA421B for 470-865 MHz operation.
Key Features
- Four-to-One RF Combining — Merges the outputs of up to four PSM transmitters into a single antenna feed to simplify wireless monitoring infrastructure.
- 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 multiple independent transmit antennas.
- Active Broadband Design — The active circuit helps offset combining losses so transmit signal strength is maintained across all four 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
| Model | PA421BX |
| Type | Active broadband PSM antenna combiner |
| Configuration | Four-to-one (up to four transmitters into one antenna) |
| RF Frequency Range | 865-960 MHz |
| Compatible Systems | PSM 300, PSM 900, PSM 1000 |
Frequently Asked Questions
What frequency band does the PA421BX cover?
It operates across the 865-960 MHz range, serving deployments that use higher frequencies than the 470-865 MHz PA421B.
How many transmitters can it combine?
Up to four PSM transmitters are merged into one antenna feed, reducing the number of transmit antennas in the install.
Which Shure systems are compatible?
It works with PSM 300, PSM 900, and PSM 1000 personal monitoring systems operating in its frequency band.
How do I scale beyond four channels?
The eight-channel PA821BX handles up to eight transmitters on a single antenna for larger installations.
How does it integrate into an AV rack?
The PA421BX 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 PA421BX is covered by Shure's standard manufacturer warranty, and Creation Networks can assist with specification and integration into commercial AV systems.
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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