Which description best fits portable radios?

Which description best fits portable radios?

• A. They are powered by the vehicle's electrical system
• B. They are smaller and battery-powered with buttons and knobs
• C. They are used only on fixed frequencies
• D. They require no power to operate

Answer: (B)

Portable radios are handheld, self-powered devices used in the field. Their small size and built-in battery let you carry them around, and the buttons and knobs provide quick, on-the-fly control of channels, volume, squelch, and power. This combination—compact, battery-operated hardware with accessible controls—defines why they fit the description. They differ from mobile radios, which rely on a vehicle’s electrical system, and from base or fixed stations, which stay in one place. They aren’t limited to a single fixed frequency; many portables can switch among multiple channels or frequencies. And they do require power to operate, supplied by the internal battery or rechargeable pack.

Portable radios are handheld, self-powered devices used in the field. Their small size and built-in battery let you carry them around, and the buttons and knobs provide quick, on-the-fly control of channels, volume, squelch, and power. This combination—compact, battery-operated hardware with accessible controls—defines why they fit the description. They differ from mobile radios, which rely on a vehicle’s electrical system, and from base or fixed stations, which stay in one place. They aren’t limited to a single fixed frequency; many portables can switch among multiple channels or frequencies. And they do require power to operate, supplied by the internal battery or rechargeable pack.