have one's ears on

English

have one's ears on (third-person singular simple present has one's ears on, present participle having one's ears on, simple past and past participle had one's ears on)

To be listening on citizens' band radio.
- 2006, Bryan Gregory, Ole Man on the Porch: The Trooper, page 99:
  On that CB radio. Nobody ever used their real names. […] Seldom was there anything better to talk about than finding out where he was. When I had my ears on, there was never any doubt in my mind.
- 2014, Jeffrey Otersen, Little Truckers: Feeling Scrappy:
  The voice of the other truck on the CB radio repeats. “Go ahead, I have my ears on!”