I am IT person not Ham operator and I guess it is difficult for you to understand me and my different thinking so this is a very simple question that will probably answer the dilemma at Coaxial cable loss, dbm, db correlations as nobody is able to understand the puzzles that I'm having.
So Imagine that you put 40 dBm (10 Watts output) amplifier to boost 2Ghz signal and hope to travel good distance.
This cable is having 30dB attenuation at 100 meters at that frequency. As I understood 30dB attenuation is reducing the original power 1000 times. Ok, ok.
But boy I am feeding the line with 10Watts right ? That could be possibly translated as 10Volts X 1 Amp !
Instead of antenna at the distant end (at 100 meters) if I put a light bulb by soldering the copper core for + and shielding for - will the 8 volts rated bulb (drawing current of 100mA) will it light or not ? By the way the electrical properties for the cable are 3 ohm resistance per 100 meters.
What's your answer ?