Quick question... when someone tells you that their receiver provides 12dB
SINAD (or whatever) with an incident field strength of, say, 20uV/m, is 20uV/m
an RMS value or magnitude? Or isn't this standardized enough that one should
assume?

From some Googling RMS appears to be the standard, but I wanted to ask some
folks who really know...

(Back in school, in EM classes it was always magnitudes...)

Thanks,
---Joel