Shure PA421BX Four-channel Antenna Combiner, 865-960 MHz

The PA421BX is a professional UHF antenna combiner designed to consolidate up to four wireless transmitter signals into a single antenna. It is engineered for use with wireless in-ear monitoring systems, reducing the need for multiple antennas and minimizing intermodulation interference. The unit supports a wide frequency range of 865–960 MHz, making it suitable for various international RF environments. Its robust design ensures reliable RF performance in demanding live sound, broadcast, and installation applications.

Features

• Combines up to four wireless transmitter signals into a single antenna output

• Wide frequency range: 865–960 MHz for flexible global operation

• Reduces intermodulation distortion and RF interference

• Internal low-noise amplification to maintain signal integrity

• Front-panel LED indicators for power and signal status monitoring

• Rear-panel RF connectors for straightforward system integration

• Built-in power distribution for compatible transmitters

• Rack-mountable metal chassis for durability and professional installation

• Optimized for use with wireless in-ear monitoring systems

• Helps simplify antenna setups and improve overall RF system performance