Shure PA421A 4-Channel IEM Antenna Combiner and Power Distribution 470-952MHz

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Write a review Q&A SKU: TZ-PA421A Solotech ID#: 119848
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Shure PA421A 4-Channel IEM Antenna Combiner and Power Distribution 470-952 MegaHertz

The Shure PA421A 4-Port Antenna Combiner will combine RF (Radio Frequency) signals and distribute power to up to 4 Shure PSM series transmitters. The PA421A will effectively improve overall RF performance and eliminate the clutter associated with excessive antennas and power cables.


  • Combines up to four PSM transmitters to a single antenna set
    • Improved RF networking
    • Reduce rack clutter
  • Quieter fan for significant reductions in ambient unit noise
  • Temperature-sensitive fan power for significant reductions in ambient unit heat
  • 4 Input LED Signals (green when active; off when inactive)
  • 4 DC Power LED Signals (green when active; off when inactive; red when active but interrupted/shorted)
  • Active-channel amplifier power for additional reductions in ambient unit heat
    • 1 Channel engaged = 1 power amplifier active
    • Updated from PA421SWB, in which all power amplifiers were active in a block, regardless of how many of the 4 channels were active
  • Passive (non-powered) antenna combining (Contact Shure Service Department for more detail and availability)


  • Carrier Frequency Range: Wideband (470-952MHz)
  • Connector Type: BNC-type x4
  • Impedance: 50 Ω
  • Gain Control: System Gain: +0/-5dB
  • Operating Voltage:
    • 100-240VAC, 50/60Hz
    • Current Drain: 1.65 A (referenced at 100 V AC) (165VA)
    • Consumption: 80W max
  • RF Indicator:
    • Configuration: Active
    • RF Frequency Range: 470-952 MHz
    • Max RF Input: 24dBm
    • RF Gain: 0/-5dB
  • LED: LED Indicator Min. Detection Threshold: 5.5dBm
  • Distribution
    • Configuration: Active
    • Output Intercept Point: > 30 dBm, typical
  • Expansion:
    • Configuration: Passive
    • Insertion Loss: < 4dB
  • Temperature: 0 to 145° F (-18 to 63deg; C)
  • Dimensions: 1.7 x 15.8 x 14.4" (43 x 401 x 365mm)
  • Weight: 9.5 lbs (4.3kg)
  • Packaging Info:
    • Package Weight: 15.6 lb
    • Box Dimensions (LxWxH): 28 x 17.7 x 4.1"


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