Coaxial lightning arrestors for frequencies above 50 MHz use the same technology as lower frequency units and are all constructed in our standard arrestor housing.
Even-numbered 302, 304 and 306 series units are ideal for terrestrial repeater or point-to-point services, commercial broadcast or cellular applications, long distance scatter, EME, etc. Each unit includes high voltage blocking between input and output ports with antenna side of arrestor connected through near dead-DC--short inductor to ground (case), draining center conductor of system continuously to earth connections.
All units are available with DC insertion modification which allows duplexing of AC or DC voltage through arrestor into transmission line to power mast-mounted preamps, switching, etc. To order, state model number and add "DC" suffix. Also state operating voltage and we'll construct the unit to provide close-in over-voltage attack, dual polarity. Voltage insertion is done from protruding hardware in top of arrestor through ground-lifted RF choke.