Shielded and jacketed cables with a jackets of FEP/polyimide tape covered by a PTFE tape outer layer, incorporating MIL-DTL-22759/81 or /82 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.