If the operating frequency is increased, how does the transmission line loss change?

As the operating frequency increases, the transmission line loss also increases. This happens primarily due to the 'skin effect,' where higher frequency currents tend to travel closer to the surface of the conductor, effectively reducing the cross-sectional area and increasing resistance. Dielectric losses in the cable's insulation also increase at higher frequencies. While the 'skin effect' is the underlying cause for much of this, the distractor mentioning it incorrectly claims that the loss decreases. The correct conclusion is that loss increases due to internal line losses overall.