Shure PA421A Antenna Combiner

  • 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