How does an FM walkie-talkie work? What are its advantages?

FM walkie-talkie is a wireless communication device that uses frequency modulation (FM) technology for communication. Its working principle and advantages are as follows:

working principle:

1. Voice signal modulation: FM walkie-talkies convert voice signals into frequency modulated signals, that is, they carry sound information by changing the carrier frequency.

2. Wireless transmission: The frequency modulated signal is transmitted to the other party’s walkie-talkie in the form of radio waves through the antenna.

3. Demodulation and restoration: After the receiving walkie-talkie receives the radio waves, it demodulates and restores the frequency modulated signal to the original sound signal.

Advantage:

1. Strong anti-interference ability: Due to the use of frequency modulation technology, FM walkie-talkies have a certain degree of resistance to interference during signal transmission, so they have better communication effects in complex wireless environments.

2. Good sound quality: Compared with amplitude modulation (AM) technology, frequency modulation has lower requirements on signal-to-noise ratio during transmission, so FM walkie-talkies can provide better sound quality to a certain extent.

3. High spectrum utilization: FM walkie-talkies can make full use of frequency resources to achieve higher communication capacity and lower bit error rate, thereby improving communication efficiency and reliability.

4. Wide range of applications: FM walkie-talkies are suitable for various frequency bands and application scenarios, such as personal communication, commercial communication, emergency communication, etc.

In general, FM walkie-talkies use frequency modulation technology for communication, which has the advantages of strong anti-interference ability, good sound quality, high spectrum utilization and wide application range, and are suitable for a variety of wireless communication scenarios.