In 1959, Chess Brothers Leonard and Phil, as the L & P Corporation, bought WTAC 600 Flint, Michigan. If you believed the WTAC Coverage Map, you would have assumed that WTAC could be heard in Detroit fairly well, enough to promote their Records in both Flint and Detroit. Because of the hilly ridge in between, the conductivity falls way off and it doesn't, between that and the DA pattern. They sold WTAC in 1961, and the proceeds were used to buy WHFC 1450 in 1963, and WEHS/WHFC-FM 97.9. WHFC soon became WVON, which despite it's 1000 Watts Day 250 Watts Night, served the demographics of Chess Records better and with many more people. Eventually, and again until fairly recently, 97.9 was WLUP, the Loop. The LUP was also a subtle reference to Leonard and Phil Chess. Since WLAP was in Lexington, KY, the opted for L U P, U being a mathematical symbol for and/combined with and the first letter of the Germanic/Yiddish word "und" meaning "and".