Interesting station call letters and notes

The selection of radio station or television call letter is evidently a grueling process.  One would like to stay within fcc limitations, while also making a funny little joke.  Most cities fail at this task.  LA and New York own the eponymous call letters (i.e. knbc, wabc, kcbs and such) while other cities are forced to come up with new and crazy letters.  I cannot guess why Seattle has chosen to name two separate stations KING-TV and KONG-TV.  Also, somewhere in the US there is a CHUM-fm.  In case you are wondering, if I had my choice I'd work for KRON-TV.  I'd also love some day to move up the chain and work in the call letter assignment laboratories where they are created with sprawlings books full of letters of the English language- some lost and long forgotten, some rarely used for fear of bewitchment.  Now that you know more about the media, we can get into whether or not it is the message, or not.