These types of dolphin use extremely high frequency signals for echolocation.

Two additional amplifiers detected and filtered this low frequency signal.

Information that drives the video display takes the form of high frequency electrical signals.

If the added bias remains constant, these high frequency signals become overbiased.

The antennas were much smaller, due to using a higher frequency signal.

Young people come to high frequency signals more readily than old people do.

However, this method can only be used with high frequency signals.

When dealing with high frequency signals, phase-related problems may be quite complex.

A narrow gap also permits higher frequency signals to be recorded for a given tape speed.

I can say though that power cables/wiring weren't intended to carry high frequency signals.