when did tv stop going off the air
Sign-on and sign-off While both sign-ons and sign-offs have become less common with the increasing prevalence of twenty-four-hour-a-day, seven-day-a-week broadcasting, they are still conducted by a number of stations around the world. For broadcasters that do still close for a period each day, this station close is most often during the early hours of the morning, with the daily sign-on typically occurring between 5:00 a.m. and 7:00 a.m. However, in some countries with more limited broadcast coverage, such as North Korea, sign-on may be as late as 5:00 p.m. A particular type of AM radio station known as a daytimer usually only operates during daytime hours, and will therefore run a sign-on sequence each day.