John Popelish wrote:

Cecil Moore wrote:
For instance, what is the current at the end of 200 feet of RG-58
terminated by a 50 ohm antenna used on 446 MHz when the source
current is 2 amps?

Somewhat less then 2 amps.

Does "somewhat" cover 24 dB of losses? :-) The point is that the
current "drops" by exactly the same amount as the voltage. That's
a characteristic of distributed networks as opposed to lumped
circuits. In a Z0 RF environment, the current has to "drop" by exactly
the same amount as the voltage to maintain the Z0 ratio. There are
really no "across" and "through" concepts as exist in DC circuitry.

I guess I'm so dense that I need help in proving what you think
I can prove with that information. Right now, I am apparently
missing something, maybe because of too much California Merlot.

Sounds like something I might do, this afternoon.

Which, helping or imbibing? :-)
--
73, Cecil http://www.qsl.net/w5dxp