How does walkie-talkie works & what's difference from TETRA

A walkie talkie, also known as a two-way radio, works by transmitting and receiving radio signals over a specific frequency. Here is a brief overview of how it works:

1. The walkie talkie has a built-in transmitter and receiver. When you press the "push-to-talk" button on the walkie talkie, you activate the transmitter.

2. The transmitter converts your voice into a radio signal and sends it out over a specific frequency. This frequency is determined by the channel you have selected on the walkie talkie.

3. The radio signal travels through the air to the receiver in the other walkie talkie.

4. The receiver picks up the radio signal and converts it back into an audio signal, which is heard through the speaker on the other walkie talkie.

5. When the other person wants to respond, they press their "push-to-talk" button, activating their transmitter, and the process repeats.

Walkie talkies use radio waves to communicate, and their range depends on factors such as the power of the radio signal, the frequency used, and any obstacles in the way. Some walkie talkies have a range of only a few hundred feet, while others can transmit over several miles.

Walkie talkies and TETRA networks are both communication systems, but they differ in their design, features, and capabilities.

1. Design: Walkie talkies are handheld devices that use radio waves to transmit and receive voice messages. They are typically used for short-range, point-to-point communication. TETRA networks, on the other hand, are digital mobile radio systems designed for public safety and emergency services. They consist of a network of interconnected base stations that provide coverage over a wider area.

2. Features: Walkie talkies generally have limited features and functions, such as the ability to select channels and adjust volume. TETRA networks, on the other hand, offer a range of advanced features, including encryption, GPS tracking, and messaging.

3. Capabilities: Walkie talkies are suitable for simple communication needs, such as coordination between team members on a construction site or during outdoor activities. TETRA networks, on the other hand, are designed for mission-critical communication in emergency situations. They offer robust security features, reliable network coverage, and the ability to prioritize emergency calls over other traffic.

Overall, while walkie talkies are useful for short-range, point-to-point communication, TETRA networks are designed for more complex and critical communication needs, such as emergency response and public safety.