1.How can one send high frequency low voltage pulses down a coax which has already been connected to a high voltage line?Specifically,I want to ask that if a coax used for underground electrical distribution is online(440V),and I want to send some low voltage pulses in addition,do I need to separate the power supply from the coax by introducing my pulse sending network in between or ther's another way to do it.Kindly ,if possible,give links to articles relating to such sort.
