In mechanical modulators, where must the microphone be located?

In mechanical modulators, the microphone must be located near the transmitter to ensure that it can effectively capture the audio signals intended for transmission. The proximity of the microphone to the transmitter is crucial because it minimizes the possibility of signal degradation and interference that could occur when audio travels longer distances. By placing the microphone close to the transmitter, you are ensuring optimal sound quality and a clearer signal, which is essential for effective communication. This configuration allows the modulator to accurately encode the audio into a format suitable for transmission, providing better performance in the overall communication system.

The other choices reflect less optimal locations for the microphone, which could lead to challenges in audio clarity and signal integrity.