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From: Cursitor Doom <cd999666@notformail.com>
Newsgroups: sci.electronics.design
Subject: dBs
Date: Sun, 26 May 2024 17:09:47 -0000 (UTC)
Organization: A noiseless patient Spider
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I'm feeling cognitively-declined today, probably as a consequence of my 
vast age and general ignorance of matters mathematical and everything else 
in fact, with the sole exception of "fatuous conspiracy theories." Can 
some kind soul assist?
If my RF power meter is reading -13dbm when there's a 20dB attenuator in 
line, what is the true power level, please?
I've got an exhaustive App Note from Rhode & Schwartz which claims to 
cover everything about decibels, but, er, doesn't.

CD.