DC INJECTOR FOR HF - LOW VHF (minimal loss for RF accross the frequency range)
1500 W RF POWER heavy duty PCB with 2-oz copper
18 V MOV PROTECTED 12V (13.8V) DC at 3 A max
5.5 mm socket for DC input/output
SO-239 Connectors (N-type upon request) with a 600 V Gas Discharge Tube protection at the RF+DC connector
Aluminium die-cast weather-proof box
Reverse polarity protection
Discharge resistor at the RF+DC line to ground
A DC injector (BIAS-Tee) is often used to make the antenna coaxial cable carry a DC voltage to/from the radio shack to the antenna, without needing for a second separate DC cable.
One unit can be used at the shack for sending the DC power and a second unit on the antenna site. The RF performance is not compromised.