Various embodiments concern a lead comprising a cable conductor and a coil electrode having one or more filars, the one or more filars wound in a helical pattern. The system includes a shifting tool capable of selectively positioning a mechanical sliding sleeve valve in multiple operational positions that varying the flow rate andor volume of tubing string fluid flowing to the well annulus. A signal is sent to the non-fed radiation electrode from the fed radiation electrode by electromagnetic coupling to perform a resonant operation.