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 MIL-HDBK-1012/1
Disconnects. Safety disconnect switches shall be provided at the
8.3.3.5
rear of each transmitter power amplifier. Where plenum chambers are used, the
disconnect shall be inside the plenum near the rear of the transmitter.
8.3.3.6 Circuit Breakers. Separate circuit breakers for the exciter of
each transmitter shall be installed at the technical power panel.
8.3.3.7 No-Break Power. Class D no-break power will normally not be
provided for a transmitter building.
8.3.3.8
Emergency Power. Emergency power normally is required.
8.3.3.9
Grounding Provide secure grounds for equipment, buildings, and
all electronic systems in accordance with MIL-STD-188/124 and MIL-HDBK-419.
8.3.3.10
a) Transmitters shall be bonded to the equipotential plane via the
shortest available route.
b) Metal objects in the building, including structural steel,
reinforcing steel, flashing, downspouts, gutters, cable trays, pipes, and
ventilators, shall be electrically bonded unless otherwise specified in the
BESEP.
c) Isolated metal items not exceeding 2 feet (0.61 m) in any
direction may be considered for bonding on a case-by-case basis.
d) Reinforcing steel shall be bonded together at a maximum spacing
of 8 feet (1.44 m) on centers or as set forth in the BESEP.
8.4
Receiver Buildings. The receiver station contains a number of
antennas for detecting a variety of radio frequencies from distant
transmitters. Receiver buildings house the radio receivers and related
electronic equipment, as well as computers for storing and/or transmitting
received communications to the communication center via microwave or wire
circuit. For further information, refer to NAVELEX 0101,102. See Figure 13
for a typical building layout.
8.4.1
Architectural and Structural. In addition to the requirements of
Section 3, receiver buildings are generally one story, but a second story will
be required when a Naval Security Group department is included. Details will
be set forth in the BESEP.
8.4.2
Mechanical. Computing, receiving, and other electronic equipment
housed in receiver buildings generally requires close year-round temperature
and humidity control. Refer to Section 4 and the project BESEP for specific
requirements.
8.4.3
Electrical
8.4.3.1
Lighting. Fluorescent lighting may be used in receiver buildings
when they are equipped with integral radio-frequency interference filters.
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