Shielded and jacketed cables with a jacket of FEP/polyimide tape covered by a PTFE tape outer layer, incorporating MIL-DTL-22759/89 or /90 wires. These component wires have a light-weight composite insulation of PTFE/polyimide/PTFE tape, covered with PTFE tape and silver-or-nickel plated high-strength copper alloy conductors.