MIL-H-55353, MILITARY SPECIFICATION: HEADSET, ELECTRICAL, H-216 A/U (30 MAR 1999) [S/S BY MIL-DTL-55353A]

MIL-H-55353, MILITARY SPECIFICATION: HEADSET, ELECTRICAL, H-216 A/U (30 MAR 1999) [S/S BY MIL-DTL-55353A]., This specification covers the H-216 A/U headset. It has a nominal impedance of 600 ohms and an extended range of 100 to 7,000 hertz (Hz).