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 TM 55-1905-220-14-1
c. Ten sound-powered telephone headsets are provided. Nine sound powered telephone handsets are provided.
Headsets and handsets comply with Military Specification MIL-T-15514. Jackboxes are Type G15A. Sound Powered
telephone handset holders Type Z-33B are provided for the headset in the Pilothouse. Headset lockers are provided for
all other headsets.
d. Each machine gun station is provided with a Type 1C/H8S4 horn for cease fire signaling. The horns are powered
by the cease fire switch located in the Pilothouse on the Starboard bulkhead. The power supply is 120 volt AC single
phase from the IC Distribution Panel L-107.
e. The Type IC/S Alarm System monitors a number of shipboard functions. In case of a malfunction it sounds an
audible alarm. The major components of the alarm system are an alarm panel, the sensing devices, and wiring and
junction boxes. The alarm panel is located in the Pilothouse. The sensing devices are installed at a location where they
can monitor a specific function. Power is supplied to the alarm panel from distribution panel L-107. The sensing devices
are connected to a junction box in the forward engine room. These circuits and the other sensing devices are connected
to the alarm panel through a junction box located in ordnance stores. The circuit breaker for the 24 VDC Gyrocompass
circuit is also connected to the alarm panel.
f. The Type AN/PIC-2 Public Address Set is a portable battery-powered megaphone with external power cable and
case. The unit uses its own dry cells. It may also use an external 12-volt battery using the external power cable. The
megaphone is powered by pressing the trigger switch on the pistol grip handle.
g. The LS-518 Intercommunication System is powered from the 115 VAC system. The Intercommunication System
is used for internal communication between the Pilothouse, Forward and Aft Engine Compartments, and the Crew's
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