Shure PA421B Antenna Combiner

Shure PA421B Antenna Combiner for PSM Wireless Systems

Shure PA421B Antenna Combiners are complementary accessories for Shure PSM® Personal Stereo Monitor systems. When multiple systems are required for monitoring applications, the PA421B combiners quietly and efficiently optimize RF management for up to four PSM® transmitter, while also reducing rack clutter. (Directly replaces PA421A.)

Features:

• Combines up to four PSM® transmitters to a single antenna set
  • Improved intermodulation artifacts for cleaner RF environment
  • Reduces rack clutter
• Wideband operation (470-865 MHz)
• Daisy-chain up to 2 combiners with the expansion port
• Provides DC power to compatible IEM transmitters
• LED indications of signal presence, signal overload and current draw
• Improved fan design significantly improves thermal efficiency and ambient noise
• Optional modification to enable combining of microphone receiver antennas (contact Shure Service Department for more details)
  • Provides +15V bias on RF inputs to power antennas
  • Requires modification of unit by qualified service technician

Specifications

• RF Frequency Range: 470-865 MHz
• Impedance: 50 Ω
• Operating Temperature Range: −18 °C (0 °F) to 63 °C (145 °F)
• Power Requirements: 100 to 240 V AC, 50-60 Hz
• Current Drain: 1.09 A (referenced at 100 V AC) (109 VA)
• Power Consumption: 98 W max.
• RF Input:
  • Connector Type: BNC
  • Configuration: Active
  • Impedance: 50 Ω
  • RF Gain: 0 dB (±2 dB)
  • LED Indicator Min. Detection Threshold: 2.5 dBm
  • LED Indicator Overload Threshold: >24 dBm
• Main Output:
  • Connector Type: BNC
  • Impedance: 50 Ω
• Expansion Port:
  • Connector Type: BNC
  • Configuration: Passive
  • Impedance: 50 Ω
  • Insertion Loss: <4 dB
  • RF Expansion Port Normal Operating Range: 33 dBm (2 W)
• DC Outputs:
  • Output Voltage: 15 V DC
  • Output Current (Per Output): 660 mA max
  • Output Power (Per Output): 9.9 W
  • LED Indicator Min. Detection Threshold: 85 mA
  • LED Indicator Overload Threshold: >660 dBm