Analog System

Analog System. Radios transmit analog signal over-the-air. Our original voice, which is in analog format, is modulated and amplified inside the radio before transmitted. There is no additional computer processing (i.e. digitization) inside analog radio. Analog radio system continuously transmits radio waves that are usually modulated by a voice.

One example of analog radios is FM radio broadcasting services. Another is AM aircraft radios used to communicate between control towers and air traffic controllers. A walkie-talkie, like the Family Radio Service available, to the public is another example of analog radio.

Advantages of analog radio system

• Equipment is less complex than digital. This typically leads to less expensive equipment options.
• In certain conditions, still able to communicate in areas where a received signal is already weak where digital system has already cut-off the signal.
• Interoperability among analog radio products from different vendors (for conventional system).

Disadvantages of analog radio system

• Voice quality highly depends on the environment and can easily get interference. As users move away from an analog radio transmitting site, the signal quality decreases gradually while noise level increases.
• Less functionality and features compared to digital radios.
• Less spectrum efficiency: Only one conversation at a time can occur on each analog channel.

Category: LEARNING CENTRE

Tags: analog, analog system