What Does VOX Mean on a Walkie-Talkie?

Modern walkie-talkies feature Voice Operated Exchange or VOX in place of the standard and traditional ‘Talk’ button.

Known as a voice-operated switch, VOX is an electronic sound sensor that turns on the transmitter of the walkie-talkie when the user speaks loud enough to transmit voice data.

Oppositely, the VOX automatically shuts off the transmitter when the user stops talking on the walkie-talkie, and the receiver becomes available to accept voice data.

VOX is a voice-activated sound sensor which works by detecting the differences in air pressure. It converts audible voice and sound data into electric signals.

In the case of a walkie-talkie, the transformed electric signals trigger or turn on the transmitter. In the absence of these electric signals, the transmitter goes back to its default off status.

 Modern Replacement

The early makes of the walkie-talkie feature the traditional and so-called ‘Talk’ button which serves as the transmitter switch. The user press the button, talk into the microphone, usually located at the lower portion of the walkie-talkie, and the message or the converted radio frequency signals go into the channel all the way to the other end.

When the user de-presses the ‘Talk’ button, the walkie-talkie’s transmitter is automatically turned off, and the receiver becomes open to receive the other end’s voice transmission.

With advances in science and technology, the VOX was eventually engineered and developed. It eventually became one of the latest fads in communication devices including the walkie-talkie.

The VOX has become the modern replacement to the traditional ‘Talk’ button on the modern editions and makes of walkie-talkies as a convenience feature more than anything else, doing away with the task of pressing and depressing a button to start communicating and transmit as well as receive voice signals.

Despite the wide availability of VOX, there are still two-way radio devices, including walkie-talkies, that feature the traditional ‘Talk’ button.

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