Unistrand screened defence standard multicore cable 61 12 unistrand 16 2 4c the unistrand 16 2 4c defence standard screened signal cable 4 core is a multi core screened type c flexible cable that has an overall polyester tape with a tinned copper wire braid screen the cable is designed for high density wiring in instrumentation and electronic equipment which includes avionic control systems computers data processors process control systems military vehicles signal and telemetry ap