What is the difference between digital and analog walkie talkies?
Release Time:
2023/09/04
First, the principles are different:
1, The principle of digital walkie talkie: the basic principle of digital walkie-talkie is to first convert analog voice into digital signals, and then modulated to the radio frequency up. Since the transmitter is a digital signal, of course, this device can also directly transmit data. The emergence of digital walkie-talkies is also to save radio spectrum, so most of the digital walkie-talkies are a voice channel equivalent occupies 6.25kHzk bandwidth, that is, half the frequency than the general analog walkie-talkies save.
2, The principle of analog walkie talkie: phase-locked loop and voltage-controlled oscillator (VCO) to generate the launch of the RF carrier signal, after buffering amplification, excitation amplification, amplifier, to produce the rated RF power, through the antenna low-pass filter, suppress harmonic components, and then through the antenna to transmit out.
Second, the overview of the two are different:
1, The overview of the digital walkie-talkie: digital walkie-talkie is the use of digital technology for the design of digital walkie-talkie. Digital walkie-talkie is the digitization of voice signals, to be transmitted in the form of digital coding, that is to say, the walkie-talkie transmission frequency of all the modulation are digital.
2, Analog walkie-talkie overview: analog walkie-talkie is the use of analog communication technology designed analog walkie-talkie (also known as the traditional walkie-talkie), it is the stored signal modulation to the walkie-talkie transmission frequency.
Third, the use of the two different technologies:
1, Digital walkie-talkies using technology: digital technology.
2, Analog walkie-talkie technology: analog communication technology.
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