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.
- (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