Military telephone wire (WD1A), two-direction beverage feedpoint transformer and termination transformer set, relay switch to reverse direction.
        
- Broad operating range, 0.5 to 30 MHz
 
- Fully isolated grounds prevent common-made noise
 
- Directional Switching Voltage: nominal 12 Vdc,  feedline injected
 
- Directional Switching Current: less than 30 mA
 
- Transmition line impedance: 200 ohm
 
- Antenna impedance: 450 ohm
 
- Feedline impedance: 50 ohm
 
- Feedline connector: UHF (SO-239)