This is the most common and foundational question. Users are looking for a clear, concise comparison.

A transmission line is primarily designed to transport electrical power or low-to-moderate frequency electrical signals from one point to another. It typically consists of two or more conductors separated by a dielectric material or air, such as the overhead power lines and underground cables we specialize in. The energy is guided by the physical conductors themselves.

A waveguide, on the other hand, is a specialized structure used for guiding high-frequency electromagnetic waves, such as microwaves, with minimal loss. It is essentially a hollow metallic tube or a dielectric structure where the waves propagate within the physical boundaries of the guide. Waveguides are not used for power transmission in the way our equipment is designed for, as their application is in telecommunications, radar, and other high-frequency fields.