something to do with westinghouse and a frequency swap in the 1950's http://www.angelfire.com/nm/negativfan/calls1.htmlBobMurdoch said:Hmmm. I never thought about it before but how did KYW get away with not having a W prefix?
KYW -- Westinghouse started this in Chicago, from 1921 until 1934, when the 1020 allocation was shifted to Philadelphia (since 1941, on 1060). Though the call-sign itself detoured to Cleveland from 1956 to 1965, it is back in Philadephia today.