Question
Which of the following statements is true of VOX operation versus PTT operation?
Answer Options
- A) The received signal is more natural sounding
- B) It allows “hands free” operation
- C) It occupies less bandwidth
- D) It provides more power output
Correct Answer: B
Explanation
VOX stands for Voice-Operated Transmission. When using VOX, the transceiver automatically switches from receive to transmit when the operator begins to speak into the microphone, eliminating the need to manually press a Push-To-Talk (PTT) switch. This key feature allows for ‘hands-free’ operation, which is a significant advantage in certain situations, such as mobile operation where holding a microphone can be dangerous.
While VOX is convenient, it requires careful adjustment to prevent accidental keying from background noises. PTT operation, where the operator manually controls the transmit/receive switch, is generally simpler and less prone to accidental transmissions, but it requires the use of a hand or foot switch.
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