off air

prepositional phrase2

1. •
   Not broadcasting or transmitting on radio or television.

   • Channel 9 will be off air from 11 pm until 6 am.
   • The transmitter is off air after a fire.
2. •
   Not being, or so as not to be, broadcast or transmitted by radio or television.

   • After ten years, the TV series was taken off air.
   • Fortunately his offensive remarks were off air.