In a UHF passive RFID system, a reader transmits an unmodulated continuous wave (CW) to tags, which not only provides energy to tags but also serves as the carrier of tag backscatter signals.

在超高频被动式射频统里，读取器传送未调变过之连续波讯给标签，不但可提供能量给标签也作为标签反向散射讯波。

High quality television display screen used to view a TV signal in its unmodulated state.(Modulate-to vary the amplitude,frequency or phase of radio or television).

用于收看未经压缩电视信高质量屏幕，以监控图像质量。