Which component is NOT part of the basic radio communication system?

Which component is NOT part of the basic radio communication system?

• A. Microphone
• B. Transmitter
• C. Speaker or headphones
• D. Global Positioning System receiver

Answer: (D)

In a basic two-way radio voice system, the essential path runs from microphone to transmitter, out through the antenna, then from the other end back through its receiver to a speaker or headphones. The microphone is the input that turns sound into an electrical signal, the transmitter modulates and sends that signal, and the speaker or headphones convert the received electrical signal back into audible sound. A Global Positioning System receiver, however, is designed for determining position and time, not for transmitting or receiving voice in the radio link. It isn’t part of the core two-way voice path, though it may be used elsewhere in the system for navigation or timing.

In a basic two-way radio voice system, the essential path runs from microphone to transmitter, out through the antenna, then from the other end back through its receiver to a speaker or headphones. The microphone is the input that turns sound into an electrical signal, the transmitter modulates and sends that signal, and the speaker or headphones convert the received electrical signal back into audible sound. A Global Positioning System receiver, however, is designed for determining position and time, not for transmitting or receiving voice in the radio link. It isn’t part of the core two-way voice path, though it may be used elsewhere in the system for navigation or timing.