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Main features of ultrashort wave communication

Time：2023-01-04

The ultrashort wave communication uses the line-of-sight propagation mode, which is more stable than the short-wave skywave propagation mode, and is less affected by seasonal and diurnal changes.

The antenna can be used as a directional antenna with small size, simple structure and high gain. Thus, less power transmitters are available.

The frequency is high, the frequency band is wide, can be used for multi-channel communication.

The modulation method is usually used to adjust the frequency system, can get a higher signal-to-noise ratio. Communication quality is better than short wave.

Advantages

Wide frequency band, large communication capacity; different network radio stations outside the line of sight can work at the same frequency without interfering with each other; antennas with strong directivity are available, which is conducive to anti-interference; the influence of day and night and seasonal changes is small, and communication is relatively stable.

Disadvantages

The communication distance is relatively close; it is greatly affected by the terrain, and when the radio waves pass through mountains, hills, jungle areas and buildings, they will be partially absorbed or blocked, making communication difficult or interrupted.

Keywords： Main features of ultrashort wave communication