ITU Radio Transmission Types

The radio transmission names specified by the International Telecommunication Union (ITU) consist of three symbols, each representing a specific aspect of radio transmission. The following is a complete list of symbols.

The First Symbol: Modulation Type

The Second Symbol: Modulation of the signal properties of the main carrier

The Third Symbol: Types of transmitted information

Radio transmission types and their application examples

A3E : Amplitude Modulation (AM) voice communication, commonly used in AM radio broadcasting and aviation communication
F3E : Frequency modulation (FM) voice communication, typically used in two-way radio systems such as FM radio broadcasting and walkie talkies
G7D : Phase shift keying (PSK) digital communication, typically used for satellite communication and wireless data transmission

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