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 MIL-HDBK-419A
(d) The Shielding Effectiveness (SE) (depending upon the polarization of the field) from
Figure l-84 is either
SE S=1 = 35dB
or
SE S=2 = 25 dB.
(e)
Use the lowest SE (25 dB) for design purposes.
d.
If these calculations or estimates indicate a need for additional shielding, incorporate the shielding
into the design of the structure, and schedule its installation at a time in the construction phase when it can be
done most economically.
Figure 1-84. Shielding Effectiveness of a Grid as a Function of Wire
Diameter, Wire Spacing, and Wavelength (1-15)
1-158
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