The evolution of walkie talkies from communication tools to intelligent terminals
Publish：2025-11-24 View：141
1、 The origin and technological prototype of walkie talkies
The development of walkie talkies began with technological exploration in the 1930s and 1940s, and Motorola played a key role in this process. The mobile radio communication product developed by the company in 1936 became the early prototype of walkie talkie technology, and the handheld two-way radio amplitude modulation walkie talkie developed for the US Army Signal Corps in 1940 marked the official birth of this type of communication tool. This early device weighed 2.2 kilograms and had a communication distance of 1.6 kilometers, laying the foundation for subsequent technological iterations. It is worth noting that the invention of walkie talkies was the result of joint exploration by multiple institutions and research and development participants. Although there are differences in the records of the origin of early technology from different sources, this series of breakthroughs in the mid-20th century established its core function of two-way communication.
2、 Core working principle and technical characteristics
As a two-way mobile communication tool, walkie talkies work based on wireless communication technology and can achieve instant calls without relying on external networks. The entire communication process is divided into two key stages: transmission and reception
Launch stage: The users voice is converted into an audio electrical signal of 300Hz-3400Hz through a microphone, which is then modulated and carried onto a carrier signal ranging from tens of megahertz to hundreds of megahertz through a modulation circuit. After power amplification, it is transmitted through an antenna. Common modulation methods include amplitude modulation, frequency modulation, etc.
Reception stage: The signal received by the antenna is filtered by a frequency selection circuit to select the target frequency signal, and the demodulation circuit restores the audio electrical signal, which is then converted into sound through a speaker to achieve bidirectional communication.
Its core feature is the half duplex communication mode, which requires switching between transmission and reception states through the PTT button. The communication distance is affected by multiple factors such as transmission power, terrain environment, and electromagnetic interference.
3、 Classification standards and frequency usage specifications
According to the regulations of the National Radio Office, walkie talkies are divided into four categories based on their usage scenarios and technical characteristics, corresponding to different frequency planning and management requirements:
Dedicated walkie talkie: operates in the 137-167MHz and 401-423.5MHz frequency bands, used for command and dispatch in specific departments or industries, and requires frequency usage permits and radio licenses.
Shared walkie talkie: occupying 120/240 channels in the 406.21-407.70MHz frequency band, no frequency license is required but a radio license is required for multiple users to share and use.
Public intercom: using 20/40 channels in the 409.75-409.99MHz frequency band, no frequency license or radio station license required, suitable for short-range civilian communication.
Water intercom: planned in the frequency band of 156.025-162.025MHz, used for water communication scenarios such as ships and coasts, and subject to licensing management by relevant industry regulatory authorities.
From the perspective of technical standards, walkie talkies have formed three major categories: analog, digital, and IP. Among them, digital walkie talkies have become the mainstream in the current market due to their high spectrum efficiency, strong anti-interference ability, and support for data transmission. In 2024, the proportion of shipments has reached 63.7%.
4、 The practical value of diverse application scenarios
Interphones play an irreplaceable role in various fields due to their characteristics of instant messaging, no need for network, and easy operation
Emergency rescue scenario: In the "three break" disasters such as rainstorm and earthquake, walkie talkies become a minimum tool for emergency communication, and lightweight design and long endurance capability adapt to rescue needs.
Industry operation scenarios: In the fields of power repair, construction, logistics scheduling, etc., walkie talkies support real-time communication under manual operation, improving operation efficiency and safety factor.
Special needs scenarios: For elderly people with cognitive impairments, special education groups, etc., the button free and lightweight design of walkie talkies reduces the threshold for use, achieving safety protection and convenient communication.
Professional service scenarios: Public security, fire protection, medical and other industries. As the core equipment for command and dispatch, walkie talkies support multi terminal collaboration and remote collaboration to ensure service response efficiency.
5、 Technological Evolution and Industry Development Trends
The current walkie talkie industry is undergoing a transformation from a single communication tool to intelligent terminals, presenting three major development trends:
Technological integration acceleration: Deep integration of 5G private network, narrowband Internet of Things, Beidou positioning, AI voice recognition and other technologies, promoting the development of products towards the direction of "voice+data+positioning+scheduling" integration.
Market structure optimization: From 2025 to 2030, the size of the Chinese market is expected to increase from 12 billion yuan to 20 billion yuan, with an average annual compound growth rate of 9% -11%. The penetration rate of digital walkie talkies will increase to over 95%.
Service model innovation: The industry has shifted from hardware sales to comprehensive solutions of "hardware+software+service", and the rental sharing model has rapidly become popular in temporary scenarios.
Deepening domestic substitution: The penetration rate of domestic chips in mid to high configuration equipment has reached 42.7%, and with policy support, the localization rate in professional markets is expected to exceed 75% by 2030.
From the perspective of regional development, the East and South China regions have become the main force in the market with their industrial foundation and application demand, while the central and western regions have rapidly increased their penetration rate under the promotion of new infrastructure, forming a differentiated growth pattern.
The development of walkie talkies began with technological exploration in the 1930s and 1940s, and Motorola played a key role in this process. The mobile radio communication product developed by the company in 1936 became the early prototype of walkie talkie technology, and the handheld two-way radio amplitude modulation walkie talkie developed for the US Army Signal Corps in 1940 marked the official birth of this type of communication tool. This early device weighed 2.2 kilograms and had a communication distance of 1.6 kilometers, laying the foundation for subsequent technological iterations. It is worth noting that the invention of walkie talkies was the result of joint exploration by multiple institutions and research and development participants. Although there are differences in the records of the origin of early technology from different sources, this series of breakthroughs in the mid-20th century established its core function of two-way communication.
2、 Core working principle and technical characteristics
As a two-way mobile communication tool, walkie talkies work based on wireless communication technology and can achieve instant calls without relying on external networks. The entire communication process is divided into two key stages: transmission and reception
Launch stage: The users voice is converted into an audio electrical signal of 300Hz-3400Hz through a microphone, which is then modulated and carried onto a carrier signal ranging from tens of megahertz to hundreds of megahertz through a modulation circuit. After power amplification, it is transmitted through an antenna. Common modulation methods include amplitude modulation, frequency modulation, etc.
Reception stage: The signal received by the antenna is filtered by a frequency selection circuit to select the target frequency signal, and the demodulation circuit restores the audio electrical signal, which is then converted into sound through a speaker to achieve bidirectional communication.
Its core feature is the half duplex communication mode, which requires switching between transmission and reception states through the PTT button. The communication distance is affected by multiple factors such as transmission power, terrain environment, and electromagnetic interference.
3、 Classification standards and frequency usage specifications
According to the regulations of the National Radio Office, walkie talkies are divided into four categories based on their usage scenarios and technical characteristics, corresponding to different frequency planning and management requirements:
Dedicated walkie talkie: operates in the 137-167MHz and 401-423.5MHz frequency bands, used for command and dispatch in specific departments or industries, and requires frequency usage permits and radio licenses.
Shared walkie talkie: occupying 120/240 channels in the 406.21-407.70MHz frequency band, no frequency license is required but a radio license is required for multiple users to share and use.
Public intercom: using 20/40 channels in the 409.75-409.99MHz frequency band, no frequency license or radio station license required, suitable for short-range civilian communication.
Water intercom: planned in the frequency band of 156.025-162.025MHz, used for water communication scenarios such as ships and coasts, and subject to licensing management by relevant industry regulatory authorities.
From the perspective of technical standards, walkie talkies have formed three major categories: analog, digital, and IP. Among them, digital walkie talkies have become the mainstream in the current market due to their high spectrum efficiency, strong anti-interference ability, and support for data transmission. In 2024, the proportion of shipments has reached 63.7%.
4、 The practical value of diverse application scenarios
Interphones play an irreplaceable role in various fields due to their characteristics of instant messaging, no need for network, and easy operation
Emergency rescue scenario: In the "three break" disasters such as rainstorm and earthquake, walkie talkies become a minimum tool for emergency communication, and lightweight design and long endurance capability adapt to rescue needs.
Industry operation scenarios: In the fields of power repair, construction, logistics scheduling, etc., walkie talkies support real-time communication under manual operation, improving operation efficiency and safety factor.
Special needs scenarios: For elderly people with cognitive impairments, special education groups, etc., the button free and lightweight design of walkie talkies reduces the threshold for use, achieving safety protection and convenient communication.
Professional service scenarios: Public security, fire protection, medical and other industries. As the core equipment for command and dispatch, walkie talkies support multi terminal collaboration and remote collaboration to ensure service response efficiency.
5、 Technological Evolution and Industry Development Trends
The current walkie talkie industry is undergoing a transformation from a single communication tool to intelligent terminals, presenting three major development trends:
Technological integration acceleration: Deep integration of 5G private network, narrowband Internet of Things, Beidou positioning, AI voice recognition and other technologies, promoting the development of products towards the direction of "voice+data+positioning+scheduling" integration.
Market structure optimization: From 2025 to 2030, the size of the Chinese market is expected to increase from 12 billion yuan to 20 billion yuan, with an average annual compound growth rate of 9% -11%. The penetration rate of digital walkie talkies will increase to over 95%.
Service model innovation: The industry has shifted from hardware sales to comprehensive solutions of "hardware+software+service", and the rental sharing model has rapidly become popular in temporary scenarios.
Deepening domestic substitution: The penetration rate of domestic chips in mid to high configuration equipment has reached 42.7%, and with policy support, the localization rate in professional markets is expected to exceed 75% by 2030.
From the perspective of regional development, the East and South China regions have become the main force in the market with their industrial foundation and application demand, while the central and western regions have rapidly increased their penetration rate under the promotion of new infrastructure, forming a differentiated growth pattern.
