You can see hardline on telephone poles if your area has cable. I said before that loss becomes even worse as SWR increases. In CB service, the two impedance's mainly used are 50 Ohm and 75 Ohms. Velocity factor is simply a number we use to determine how fast or slow a wave travels through coax. Different coax models have different velocity factors.
Lets look at some numbers.
We will take our formula for figuring out 1 wavelength and modify it. Practice and see if you can get lengths for other coax types with different velocity factors. Assemble Your Coax Correctly Bad connection cause loss. If you are going to solder connectors on the ends of your coax, be sure to do it right. You must have the right tools.