Depending on the type of application, a two-way radio can have a variety of different types of frequencies. In the half-duplex mode, both parties can listen and talk at the same time. Many two-way radios are equipped with a Push-to-Talk button that transmits messages when pressed and receives messages when released. A full-duplex system utilizes different frequencies and frequency sharing methods to ensure that both parties can hear each other clearly.
Another type of two-way radio is called a walkie-talkie. This device can be used by two people or a group of people. Both devices need to be in the same channel or frequency band. A walkie-talkie must be continuously on both transmit and receive. When transmitting, it is important to muffle the other device. To avoid causing interference, it is best to keep a clear line of communication.
A two-way radio’s distance depends on its frequency. Most are VHF (very high frequency) or UHF (ultra-high frequency) and are capable of a range of 15 feet. You should check your local laws before purchasing a two-way radio. Depending on the use, you may need an FCC license. This can be obtained for free. You should also be aware of the various types of licenses available for two-way radios.
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