Ohms Traveling Along an RGB/5 Wire

Sorry to say but ohms don't travel, electrons do. Thanks. I can relate to the "very tired electrons" to being similar to taking a long walk only, one can stop and re-energize oneself with refreshments thereby cover more ground and feel stronger at the end as opposed to 0 refreshments. This being so, doesn't the same work with electrons i.e. by having a Distribution Amplifier (DA) at the 150' point re-energize the electrons so that they, at the 300' end are stronger and quantitively more electrons arrive as opposed to, trying to revitalize the tired few (deteriorated signal) that do arrive at the end of a straight 300' run. Also, there is an amplifier at the beginning of the signal only, I'm not sure of it's make but will try and get that info. GAry

You've gotten some good answers so far, but I'm a little confused about your initial setup, and would like to understand that.

Re: I was setting up a 3 plasma set in front of a stage, we used a 300' 5 wire RGB at the end of which was secured BNC's attached to the RG andB, these were then connected to the RCA "vid in" of the 3 plasmas. The reception was like a bloody snow storm. The situation was resolved in rather an archaic method, one of the guys finally cut the skin of the RGB and took 1 R 1 G an 1 B directly to the RCA inlet of each plasma, and it worked.

Did you initially try to run each plasma monitor with only one of the RGB signals, i.e., R to one monitor, G to another, B to the third?

I ask because you talk about connecting to the RCA "vid in", which (in my experience with older equipment) is a composite input, i.e., for a signal where the R, G, and B signals are carried on one pair of wires (or 1 wire and shield).

For a minute there I thought Ohms Law was getting revised!

A transmission line must be terminated with it's characteristic impedance, otherwise signal loss will occur. An open on a 1/4 wavelength line will reflect back a short. When you put a 50 ohm load on the far end of a 50 ohm line of any length, the close end will have the characteristics of a 50 ohm resistor (but the "ohms" didn't flow). Does this help?