MIL-H-49161, MILITARY SPECIFICATION: HEADSET-MICROPHONE KIT MK-1697 ( )/G (26-JUN-1978)

MIL-H-49161, MILITARY SPECIFICATION: HEADSET-MICROPHONE KIT MK-1697 ( )/G (26-JUN-1978)., This specification covers one type of Headset-Microphone Kit designated as Headset-Microphone Kit MK-1697()/G, designed to fit DH-132 armored vehicle crewman helmets. (See 6.1)