50 kW FM Switching Combiner

Any Single FM Channel (88.1 to 107.9 MHz)
2 x 25 kW average power

The FM Switching Combiner consists of (1) Coaxial Hybrid used as a 2-way power combiner with (3) Motorized Coaxial Switches to route the transmitter signals to the combiner, to a test load port or to the system output. See the simplified block diagram below. The system is constructed with 3-1/8 inch and 4-1/16-inch coaxial Line and resides in an aluminum floor-mount base frame with vertical input and output connections. The two input signals from the transmitters must be in quadrature.

2 x 25 kW avg. FM Switching Combiner System, includes:
  • (1 each)
    3 dB Coaxial Hybrid Coupler
  • (3 each)
    Motorized Coaxial Switch, 4-1/16 inch
  • Interconnect components between above items
  • Floor-mount base frame

Specifications:

  • Inputs:
    3-1/8-inch, 50-ohm EIA flanged
  • TX 1 input signal must "lag" TX 2 input signal by 90 degrees
  • Reject Load Port:
    3-1/8-inch, 50-ohm EIA flanged
  • Combined Output:
    4-1/16-inch, 50-ohm flanged
  • Test Load Port:
    4-1/16-inch, 50-ohm flanged
  • Reject Load and Test Load are not included
  • Switch AC Supply:
    120 or 240 VAC, specify with order
  • Switch Control:
    12 VDC or 24 VDC specify with order
  • Output Power Rating:
    50 kW average
  • Input Return Loss:
    28 dB or less 88.1 to 107.9 MHz (all modes)
  • Input Isolation:
    30 dB min. over 88.1 to 107.9 MHz

50 kW FM Switching Combiner Outline Drawing

50 kW FM Switching Combiner Product Brochure