INCH-POUND
MIL-DTL-18239E(AS)
31 October 2000
SUPERSEDING
MIL-E-18239D(AS)
17 December 1982
DETAIL SPECIFICATION
EARPHONE H-87B/U
This specification is approved for use by the Naval Air Systems Command, Department of
the Navy, and is available for use by all Departments and Agencies of the Department of Defense.
1. SCOPE
1.1 Scope. This specification covers one type of moving coil, dynamic type earphone
designated as H-87B/U. This earphone transforms electrical energy into acoustical energy and
may be acquired normally as component parts of a complete headset assembly
1.2 Classification. Earphones will be of the following types as specified (see 6.2).
Type
Figure
Part Number
Type 1
Figure 1
M18239-1
Type 2
Figure 2
M18239-2
Type 4
Figure 3
M18239-4
Type 2 supersedes Type 3, items in stock may be used until exhausted.
Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be
of use in improving this document should be addressed to: Commander, Naval Air Warfare Center
Aircraft Division, Code 414100B120-3, Highway 547, Lakehurst, NJ 08733-5100, by using the
Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this
document or by letter.
AMSC N/A
FSC 5965
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
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