Shure PA421B-UK

A four-to-one wideband antenna combiner designed for PSM wireless systems. This device combines RF outputs from up to four PSM transmitters into one RF output to feed a single transmit antenna, improving reception quality by reducing intermodulation distortion and multipath interference dropouts. Compatible with PSM300, PSM 900, and PSM 1000 systems. It directly replaces the PA421A model.

Key features

• Combines up to four PSM transmitters to a single antenna set for improved RF networking
• Wideband operation (470-865 MHz)
• Four input LED signals (green when active; off when inactive)
• Temperature-sensitive fan with reduced ambient noise and heat output
• Daisy-chain capability for up to two combiners via expansion port
• LED indicators for signal presence and signal overload detection
• Passive (non-powered) antenna combining functionality

Specifications sourced from the manufacturer/distributor listing. Pricing and stock to be confirmed before publishing.