Shure PA421B Wideband Antenna Combiner 470-865 Megahertz

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
• 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
  • 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
• Expansion Port:
  • Connector Type: BNC
  • Configuration: Passive
  • Impedance: 50
  • 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