db to np
时间：04-07
整理：3721RD
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What's the conversion from Np/m to dB/m?
on google, 5 min search:
Attenuation in dB/m = 8.686 X Attenuation in Np/m
Mazz
i know 1db = 8.686neper
but i want to know when and also why we use this equation?