On Sat, 14 Aug 2004 03:11:55 GMT, "
wrote:

Don't they reduce power at night fall to prevent interference with other
stations
Art

Hi Art,

Historically, three letter calls in the AM band were designated as
"clear channel" stations and are generally always lit up at full
power. "Clear channel" was meant to serve a vast region out of major
metropolitan centers. KVI is one here in Seattle, KGO in San
Francisco, WGN & WLS in Chicago, KOA in Denver, KFI & KNX in Los
Angeles, WSM in Nashville, WWL in New Orleans, WBZ in Boston, WHO in
Des Moines, KYW in Philadelphia (strange listing) and so on. Almost
across the board all transmit 24/7 at 50KW with omnidirectional
antennas. Not all three letter calls are clear channel, what with the
change of time and market and financial backing.

73's
Richard Clark, KB7QHC