Portable radios usually contain all of the following EXCEPT, which is not typically integrated?

Portable radios usually contain all of the following EXCEPT, which is not typically integrated?

• A. A transmitter, a receiver, and antenna
• B. A self-contained microphone and speaker
• C. An attached power supply (typically a rechargeable battery)
• D. An external electrical power system

Answer: (D)

Portable radios are designed to be self-contained units you can carry and operate without being connected to a power outlet. They normally include the essential functions all in one body: a transmitter and receiver with an antenna to send and receive signals, a built-in microphone and speaker for direct communication, and a power source inside—the rechargeable battery—so you can use them away from a wall socket for long periods. An external electrical power system isn’t built into the handheld unit. That kind of power setup is provided by a charger, docking cradle, or vehicle power supply separate from the radio itself, which keeps the device compact and portable. So the item that isn’t typically integrated is an external electrical power system.

Portable radios are designed to be self-contained units you can carry and operate without being connected to a power outlet. They normally include the essential functions all in one body: a transmitter and receiver with an antenna to send and receive signals, a built-in microphone and speaker for direct communication, and a power source inside—the rechargeable battery—so you can use them away from a wall socket for long periods.

An external electrical power system isn’t built into the handheld unit. That kind of power setup is provided by a charger, docking cradle, or vehicle power supply separate from the radio itself, which keeps the device compact and portable. So the item that isn’t typically integrated is an external electrical power system.