When a radio station is used on a daily basis, two-way communication is possible as long as the frequency is the same. However, this is very dangerous in a major war, because in addition to being easily detected and monitored, it is also very easy to be interfered with, resulting in poor transmission of operational command orders and delaying fighters. In order to ensure the security of communications, military radio stations generally use frequency hopping technology to prevent communication content from being eavesdropped.
A military radio is a type of communication equipment specially designed for the military or security agencies to communicate in military operations and security guarantees. Military radio stations have the characteristics of confidentiality, anti-interference and high reliability, and are generally more advanced and complex than civilian radio equipment.
In the process of frequency hopping communication, military radios randomly switch between several different frequencies, so that the enemy cannot detect all the calls or are completely interfered with. On top of that, communications may be further encrypted, especially for digital communications, so even if you crack the frequency hopping pattern, you'll only get a bunch of gibberish.
Military radio stations are divided into different types such as HF, VHF, UHF and so on according to the communication frequency band, among which HF radios are generally used for long-distance communication, while VHF and UHF radios are used for short-range communication and networking communication. In addition, military radio stations also have a variety of functions such as frequency modulation, amplitude modulation, phase modulation, spread spectrum, encryption, etc., which can meet different communication needs.