- #1
Bernie G
- 330
- 13
The standard characteristic cable impedance for the microwave industry is 50 Ω. Why is 75 Ω the standard for cable TV? Making a 75 Ω low loss cable with a 3 GHz rating pushes the limits of technology. Typically a 50 Ω cable would be less than half the diameter, lighter, more flexible and easier to install, cheaper, and have better electrical characteristics.