Unistrand screened defence standard multicore cable 61 12 unistrand 7 1 15c the unistrand 7 1 15c defence standard screened signal cable 15 core is a multi core screened type c flexible cable that has an overall polyester tape with a tinned copper wire braid screenthe 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