CISPR 12 and 25 define the RBW for peak and average as a 3 dB bandwidth, but the QP at 6 dB. Receivers are all 6 dB. Can anyone explain why? I read through parts of CISPR 16-1-1, and it mainly seems to describe characteristics of receivers. What other specs use a 3 dB RBW? MIL STD uses 6 dB, RTCA DO-160 uses 6 dB, and CISPR 16 seems to use 6 dB.
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