Shure PA821B Eight-channel Antenna Combiner, 470-865 MHz

Eight-to-One Wideband PSM Antenna Combiner for all P3T, P9T and P10T Transmitters

• Combines up to eight PSM transmitters to a single antenna set for improved RF networking & reduced rack clutter
• Quieter fan for significant reductions in ambient unit noise - especially useful for installation work
• Temperature-sensitive fan power for significant reductions in ambient unit heat
• 8 Input LED Signals (green when active; off when inactive)
• LED indications of signal presence, signal overload

The PA821B active broadband antenna combiner streamlines the simultaneous operation of many PSM systems at a venue. The PA821B combines the RF outputs from up to eight PSM transmitters into one RF output to feed a single transmit antenna. This provides significantly improved reception quality due to reduced intermodulation distortion and dropouts due to multipath interference.

The PA821B is compatible with the wireless personal monitors Shure PSM 300, PSM 900 and PSM 1000.

Specifications

Inputs:
- 8 x BNC (RF inputs for PSM transmitters)

Output:
- 1 x BNC (combined RF output to antenna)

Frequency Range:
- 470–865 MHz (wideband operation)

Indicators:
- 8 input signal LEDs (green when active)
- Signal presence and signal overload indicators

Cooling System:
- Quiet internal fan
- Temperature-sensitive speed control

Compatibility:
- Shure P3T, P9T, P10T transmitters
- Suitable for PSM 300, PSM 900, PSM 1000 systems

Mounting:
- 1U rackmount chassis

Use Case:
- Ideal for large-scale stage productions, installations, and touring setups requiring efficient antenna consolidation and clean RF signal management