Headsets
Model 10299 |
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Military Type H-87A/U
NSN 5965-00-665-0527
A Headset designed for installation in flying helmet. It is
of minimum size and weight, simplicity in design, with
characteristics of high performance and reliability.
Constructed to meet all military environment requirements
including, temperature, humidity and accelerated aging.
CABLE: Model 10270.
Military Type P/O H-87A/U. Four single conductors,
rubber jacket. Protected at junction of single and
two conductor cordage by rubber molding. Leads
terminated with terminals. Rubber molding is bonded
to terminals and cordage to form a waterproof rubber
covered connection to the earphone. Main cable is
rubber jacketed. Terminated by transformer plug.
Shell of plug is protected by rubber molding. Plug
in Military Type PJ-054.
TRANSFORMER:
Isolating impedance matching type. Capable of
transferring audio frequency energy from 600 Ohms
source to a 7.5 Ohm load. Frequency Response:
200-6000 CPS Impedance: 600 Ohms Per MIL-C - 18266A |
EARPHONE: MODEL 10301A
Military Type H-87B/U
Type: Dynamic
Frequency Response: 100-7000Hz
Sensitivity: 103db @ 1KHz re 1 mW RMS
Impedance: 15 Ω @ 1 kHz
Distortion: <5% from 200-7000 Hz
Altitude Compensation: 50,000 feet
Temperature Range: -55'C - +85'C
Per MIL-E-18239 |
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