SHURE 

SHURE PA421B FOUR-CHANNEL ANTENNA COMBINER, 470-865 MHZ

Mfg Part Number:  PA421B  
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Price: $2,108.77
Quantity:
More to Come
Last Updated: Mar 15, 2026
No Sales Tax except these states
, PO and Wire.
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 or 865-960 MHz)
  • Daisy-chain up to 2 combiners with the expansion port
  • LED indications of signal presence, signal overload
  • 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
Main Specification
General Information
Manufacturer Shure, Inc
Manufacturer Part Number PA421B
Manufacturer Website Address http://www.shure.com
Brand Name Shure
Product Model PA421B
Product Name PA421B Four-channel Antenna Combiner, 470-865 MHz
Product Type RF Combiner
Technical Information
Minimum Frequency 470 MHz
Maximum Frequency 865 MHz
Interfaces/Ports
BNC In Yes
BNC Out Yes
Number of BNC Inputs 4
Number of BNC Outputs 2
Power Description
Input Voltage 230 V AC
Input Voltage 120 V AC
Miscellaneous
Package Contents
  • PA421B Four-channel Antenna Combiner, 470-865 MHz
  • IEC Power Cord
  • 4 x 2 ft. DC Power Output Cables
  • 4 x 22 in. Coaxial Cables, BNC Terminated
  • 1 x 11 in. Coaxial Cable, BNC Terminated
Country of Origin Mexico
Environmentally Friendly Yes
Environmental Compliance Waste Electrical and Electronic Equipment Directive (WEEE)
product information
WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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