① Ultra short wave communication utilizes line of sight propagation, which is more stable than short wave sky wave propagation and less affected by seasonal and diurnal variations.

② Antennas can be directional antennas with small size, simple structure, and high gain. In this way, a transmitter with lower power can be used.

③ High frequency and wide frequency band, suitable for multi-channel communication.

④ The modulation method usually uses frequency modulation, which can achieve a higher signal-to-noise ratio. The communication quality is better than shortwave.

Advantages

Wide frequency band and large communication capacity; Different network radio stations beyond line of sight can operate on the same frequency without interfering with each other; Antennas with strong directionality can be used, which is beneficial for anti-interference; Less affected by day, night, and seasonal changes, communication is relatively stable.

Disadvantages

The communication distance is relatively close; Due to the significant influence of terrain, radio waves passing through mountains, hills, jungle areas, and buildings may be partially absorbed or blocked, making communication difficult or interrupted.