RFS's RADIAFLEX® functions as a distributed antenna to provide communications in tunnels, mines and large building complexes and is the solution for any application in confined areas. Slots in the copper outer conductor allow a controlled portion of the internal RF energy to be radiated into the surrounding environment. Conversely, a signal transmitted near the cable will couple into the slots and be carried along the cable length. 

RLKU158-50JFLAH. 1 5/8 in RADIAFLEX cable. 50 Ohm. Fire retardant low smoke jack, 30 MHz – 2700 MHz, black jacket