Dwell time in frequency-hopped radios is defined as:

• A. The time the radio stays on a given channel before hopping.
• B. The time to switch to the next channel
• C. The total duration of a communication session
• D. The time required to unlock the device

Answer: (A)

In frequency-hopped radios, dwell time is the period the radio stays on a single channel before hopping to the next one. This duration is set so enough data can be transmitted or received on that channel and so the transmitter and receiver can stay synchronized with the hopping sequence. It reflects how long you devote to one frequency per hop, not how long overall you stay in a session or how long it takes to switch channels.

The time to switch to the next channel is a separate parameter (hop or switch time) and is typically much shorter than the dwell on the current channel. The total duration of a communication session spans many hops, so it isn’t the per-hop interval. The time to unlock the device isn’t related to hopping behavior.