In message , Jeff writes






Jerry does not seem to take on board that this is an international
group, not a group of ex-US cable technicians who slovenly misuse dBm
to mean dBmV, when the rest of the world uses dBm correctly to mean dB
relative to a milliwatt.

I think only a small minority of US cable TV people would misuse dBm
when they really mean dBmV. I worked in the industry all my life, 20
years of which were for an American company - and I never found this to
be a common practice.



--
Ian