MIL-PRF-87819/4A, PERFORMANCE SPECIFICATIONS SHEET: HEADSET-MICROPHONE, HEARING PROTECTIVE TYPE, MODERATE AMBIENT NOISE LEVELS, UP TO 105 dB, INFLIGHT AIRCREW HEADSET-MICROPHONE, M87819/4-01 (30-SEP-2009)

MIL-PRF-87819/4A, PERFORMANCE SPECIFICATIONS SHEET: HEADSET-MICROPHONE, HEARING PROTECTIVE TYPE, MODERATE AMBIENT NOISE LEVELS, UP TO 105 dB, INFLIGHT AIRCREW HEADSET-MICROPHONE, M87819/4-01 (30-SEP-2009)., This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described herein shall consist of this specification sheet and MIL-PRF-87819.