MIL-PRF-26542 Microphone, And Microphone Assemblies, Dynamic General Specification ForThis specification covers the general requirements for moving coil, noise-canceling dynamic microphones. The products described herein are used in oxygen and gas-masks, and headset-microphones \(boom-mounted and protective-shield mounted\). These parts provide communications within moderate to high noise environments, at ground level and altitude, as specified, and meet established United States Air Force sensitivity standards \(see 6.1\).

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MIL-PRF-26542F

FIGURE 3. Type II microphone bracket leakage tester.

5. PACKAGING

5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the

contract or order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor

personnel, these personnel need to contact the responsible packaging activity to ascertain packaging

requirements. Packaging requirements are maintained by the Inventory Control Point's packaging

activities within the Military Service or Defense Agency, or within the military service's system commands.

Packaging data retrieval is available from the managing Military Department's or Defense Agency's

automated packaging files, CD-ROM products, or by contacting the responsible packaging activity.

6. NOTES

(This section contains information of a general or explanatory nature which may be helpful, but is not

mandatory.)

6.1 Intended use. Microphones are intended to be used as specified (see 3.1). The sensitivity

requirements for these products were developed by Air Force agency (Air Force Research Laboratory

(AFRL) 711th HPW/RHCB (Battlespace Acoustics) Wright-Patterson AFB OH 45433] and intended for

products used by Air Force personnel, in cooperation with guidelines established by the United States Air

Force Office of the Surgeon General.