TB SIG 286
1. Scope. This bulletin provides instructions for the installation.
operation, and maintenance of Headset H113/U.
2. Forms and Records. The following forms will be used for
reporting unsatisfactory conditions of this headset:
a. DD Form 6 (Report of Damaged or Improper Shipment) will
be filled out and forwarded as prescribed in SR 745-45-5 (Army) ;
Navy Shipping Guide, Article 1850-4 (Navy ) ; and AFR 71-4 (Air
b. DA Form 468 (Unsatisfactory Equipment Report) will be filled
out and forwarded to the Office of the Chief Signal Officer as pre-
scribed in SR 700455.
c. DD Form 535 (Unsatisfactory Report) will be filled out and
forwarded to Commanding General, Air Materiel Command, Wright-
Patterson Air Force Base, Dayton, Ohio, as prescribed in SR 70045-5
and AF TO 00-35D-54.
d. Use other forms and records as authorized.
3. Purpose and Use. Headset H113/U is designed for use under
the regular steel helmet or the armored vehicle crash helmet. It is
used principally with radio equipment, but can be used with wire
equipment to which the characteristics of the headset are adaptable.
4. Description. Headset H-113/U (fig. 1) consists of two ear-
phones which are mounted on an adjustable headband, and a connect-
ing cord and plug. The earphones are provided with rubber ear
cushions. The cord extends approximately 18 inches from the right-
hand earphone, and is terminated in a plug. The headset has an
impedance of 600 ohms at 1,000 cycles per second.
TAGO 2167B--Oct. 360480-55