(AP) -- TV stations around the country will replace their analog broadcasts for a few minutes Thursday with reminders that those broadcasts will disappear completely in three weeks.
The stations have to turn off their analog broadcasts on June 12 as part of a nationwide mandate to move to more efficient digital signals. For Thursday's "soft test," analog broadcasts will be interrupted for two to five minutes once in the morning, once just after noon, at once in the early evening, around 6:30 p.m. local time for most stations.
Households that have all their sets hooked up to cable or satellite feeds will be unaffected by the analog shutdown - which already happened on many stations in February.
©2009 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
Explore further: DARPA seeks new positioning, navigation, timing solutions