 Thus, the tuners of television sets were among the first parts of consumer electronics were transistors were used.Semiconductor amplifiers have overwhelmingly displaced valve amplifiers for low and medium power applications at all frequencies.Valves continue to be used in some high-power, high-frequency amplifiers used for short wave broadcasting, VHF and UHF TV and (VHF) FM radio, also in existing "radar, countermeasures equipment, or communications equipment" using specially designed valves, such as the klystron, gyrotron, traveling-wave tube, and crossed-field amplifier; however, new designs for such products are now invariably semiconductor-based.