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TO 31R2-2TRC199-1
Change 1
4-9
4-9
ELECTROMAGNETIC PULSE PROTECTION.
Electromagnetic Pulse (EMP) is a pulse of broad bandwidth, high amplitude radio frequency electromagnetic energy
produced by the radiation from a nuclear burst.
4-9.1
EMP Susceptibility.
EMP can deliver a power density to a radio receiver a billion times greater than the power necessary for reception. The
voltage and current surges resulting from EMP can overload most modern solid state electronic devices.
4-9.2
EMP Protective Measures.
All equipment not absolutely required in primary systems should remain disconnected and stored within a sealed shelter
or other shielded enclosure for protection from EMP. To prevent or reduce "coupling" with the energy from EMP, wires
and cables (to include output coaxial types) should be shielded and properly grounded. Lengths of cables should be kept
as short as possible. Excess lengths of cable in use should never be left wound on a cable reel but should be pulled out
in a straight line to avoid having loops in the cables. When cables are not needed, they should not be connected to the
equipment. Burying cables a foot or more will reduce their exposure to EMP fields. Antennas and their connecting cables
should be disconnected from radiosets when not in use. Narrow bandwidth antennas requiring high power for operation
reduce the EMP coupling effect.
4-10
NUCLEAR, BIOLOGICAL, AND CHEMICAL (NBC) CONTAMINATION.
The Scope Shield equipment has a Chemical Agent Resistant Coating (CARC) finish that reduces the susceptibility to
NBC contamination. However, in the event the equipment does become contaminated, great care must be exercised in
performing decontamination before the equipment can be returned to use. The power supply must be disconnected to
prevent personnel injury and equipment damage. The best way to decontaminate communications equipment is with hot
air, although metal surfaces exposed to blister agents and V-agents may be decontaminated with DS2.
DS2 is highly corrosive and must be used with extreme care to avoid rendering equipment
inoperable.
WARNING
Содержание AN/TRC-199
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