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The X382A's attenuation value depends on
the rotation angle of the resistive vane, rather than on the resistivity
value of the attenuating material. Therefore, it is insensitive to
changes in temperature and humidity which can affect the resistive
card of ordinary adjustable flap attenuators. The attenuation value
is highly accurate and is stable from 0 to 50 dB. The instrument features
large, easy-to-read dials, and can handle considerable microwave power.
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