ten
four
1
a radio code used in two-way radio communication as an affirmative response or an indication of understanding
- The dispatcher acknowledged the officer's request with a simple "ten-four" over the radio.
- "Ten-four, I copy that," replied the firefighter to confirm receiving instructions from command.
- The truck driver radioed in a "ten-four" to indicate he understood the new route given by dispatch.
- The police officer gave a quick "ten-four" to confirm they were en route to the scene.
- "Ten-four, we're on standby," the paramedic responded, confirming readiness to respond to any emergency call.