Shure Eight-channel Antenna Combiner, 470-865 MHz

The Shure PA821 series is a wideband antenna combiner designed for use with Shure PSM wireless systems (such as P3T, P9T, P10T/P10R, etc.). It combines the RF outputs of up to eight PSM transmitters into a single antenna feed, streamlining RF distribution and reducing rack clutter. It enhances RF network performance by minimizing intermodulation distortion and improving signal reliability in multi‑transmitter environments like live performances, concerts, theaters, houses of worship, and broadcast setups.

Features
• Combines the RF outputs of up to eight PSM transmitters into one antenna set for optimized RF networking and reduced rack space usage.
• Wideband operation across the designated frequency range for the unit (PA821B: 470–865 MHz; PA821BX: 865–960 MHz).
• LED indicators for each input channel to show signal presence and status.
• LED indicators to alert for signal overload conditions.
• Improved fan design that reduces ambient noise and enhances thermal efficiency.
• Temperature‑sensitive fan control for quieter operation and better heat management.
• Reduces intermodulation distortion and dropouts caused by multipath interference when multiple transmitters are used simultaneously.