MIL-PRF-26542/8C
Performance:
Sensitivity at ground level: Not less than 56 dB (re 1 µV) or 630.95 µV with an SPL input of 2.8
2
Pascal's (28 dynes/cm ) at 1 kHz.
Sensitivity at altitude: Within 3 dB of ground level sensitivity when measured at 10,000 feet.
Frequency response envelope shall be as shown on figure 4 (between 300 Hz to 3,000 Hz).
Frequency response at altitude: ± 5 dB of ground level response when measured at 10,000 feet.
Impedance: 150.0 ohms ± 20 percent.
Total harmonic distortion: Between 300 Hz to 3,000 Hz, 5 percent at 114 dB relative to 20
micropascals.
Resistive load: 150.0 ohms.
Weight: 18 grams, less cord.
Blast: Shall meet the requirements of MIL-PRF-26542.
Air stop: When supplied with a cable (see figure 3), immerse the microphone end of the cable in water
to a depth that will cover the air stop portion. Apply 4 pounds of air pressure to the connector end of
the cable for 10 minutes. The air stop shall not allow passage of air.
Intended use: This microphone is used in the M42 Series gas-mask, in the US Army applications
including Tanker crews.
The microphone assembly shall be identified as shown in table I and tested in accordance with the tests
specified in table II.
TABLE I. PIN designations.
PIN
Characteristics
M-116( )/G
Supplied with cable assembly, and per the
dimensional requirements on figure 1.
M26542/8-01
Supplied without cable assembly, and per the
dimensional requirements on figure 2. Part shall
also meet the dimensional requirements of
MIL-PRF-26542/4.
5
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business