Because the V-band has a narrow low frequency range (180 MHz-280 MHz), it will interfere with each other above 6, while the U-band has a wide range (500 MHz-900 MHz), so it will interfere with each other above 60. In addition to small loading data, the sound effect of V-band is worse than that of U-band.
Because U-segment is high frequency transceiver. Therefore, the requirements for electronic components are higher than those for V-segment. The technical content is also much higher, in terms of application. U-segment is not the segment with the most frequency waves in daily life. So the probability of interference is greatly reduced. The u-tube is very wide. You can divide more frequency points by mistake, and use multiple frequency points on the same occasion without interfering with each other.