Which of the following statements is true of VOX operation versus PTT operation?

VOX stands for Voice Operated eXchange (or Voice Operated Transmit). This feature uses an audio detection circuit to automatically key the transmitter whenever you speak into the microphone, allowing for completely hands-free operation. In contrast, PTT (Push-To-Talk) requires the operator to physically press and hold a switch to transmit. VOX is highly favored during contests, net operations, or when an operator needs their hands free to log contacts or adjust equipment. The other options are incorrect because the method used to key the transmitter—whether a physical switch or voice actuation—has absolutely no effect on the transmitted bandwidth, power output, or audio fidelity of the signal.