NOAA Weather Radio stations operating between 162.4 and 162.55 MHz have call signs consisting of a "K" or "W" followed by two letters, and two digits. The "K" and "W" prefixes are used on both sides of the Mississippi River (for example, KHB36 in Washington, D.C., and WXK25 in El Paso, Texas).

2022年11月24日 · The three letters after the ‘K’ or ‘W’ can mean a few different things. Sometimes they represent the networks that own the radio station—for example, WABC, KCBS, and WTBS.

2018年3月12日 · Ships in the Atlantic and Gulf of Mexico got a K prefix; in the Pacific and the Great Lakes, a W. The precise reasons for choosing these two letters, if there were any, are unknown (bureaucracy...

All broadcast call signs in the United States begin with either K or W, with "K" usually west of the Mississippi River and "W" usually east of it. Initial letters AA through AL, as well as N, are internationally allocated to the United States but are not used for broadcast stations.

K is broadcasting West of the Mississippi River. W is East. Each station is required by law to broadcast their call sign every half hour. If you don't know what you are listening for, it will probably sound or look like an advertisement to you.

2018年4月23日 · The United States was given four letters: W, K, N, and A. The letters W and K were assigned for commercial radio use, while N and A were assigned for military radio use (if you’re curious, Canada was given C and Mexico was given X).

While N and A were chosen for American military radio stations, W and K were designated specifically for commercial use. Stations were allowed to choose the letters that followed the K or the W, and the combination was allowed to be three or four letters in length.

2009年11月16日 · In those days when radio wasn’t 100% understood, the K/W distinction assisted in determining the source of radio signals with regards to propagation or “skip”. If sunspot activity had saturated the “D”, “E” and “Sporadic F” layers of the ionosphere, it was possible for a thousand-watt signal to not be heard across down, but ...

2020年3月2日 · Ships in the Atlantic and Gulf of Mexico got a K prefix, while those in the Pacific and Great Lakes were assigned a W. No one today knows why those two particular letters were chosen.

The FCC identifies every TV station with a unique callsign. Callsigns are 4 letters (in raw cases 3 letters), or 5 alphanumeric characters. They will always start with "K" or "W". Callsigns that start with a "W" are east of the Mississippi River, callsigns that start with a "K" are west of the river.