In wireless communication systems, low phase noise TCXOs enhance the signal-to-noise ratio, leading to better voice and data transmission quality. They are crucial for 4G/5G base stations, where clean clock signals are essential for OFDM modulation and multi-carrier systems. In RF systems, such as radar and satellite communication, they improve signal detection and reduce interference. For laboratory equipment like spectrum analyzers and oscilloscopes, low phase noise TCXOs provide accurate reference signals for precise measurements.