0 0 ▁asked ▁him ▁to ▁break ▁his ▁W IX Y ▁contract , ▁and ▁come ▁to ▁work ▁for ▁the ▁ 5 0 , 0 0 0 - w att ▁station ▁in ▁January ▁ 1 9 6 7 . ▁ ▁' Jack ▁Arm strong ' ▁was ▁a ▁copy right ed ▁mon iker ▁in ▁the ▁market , ▁so ▁Lar sh ▁adopted ▁the ▁alias ▁' Big ▁Jack ▁Your ▁Le ader ', ▁and ▁went ▁to ▁work ▁for ▁W K Y C . ▁He ▁also ▁occasionally ▁ta unted ▁W IX Y ▁by ▁calling ▁himself ▁Jackson ▁W . ▁Arm strong . ▁ ▁With ▁W K Y C ▁heard ▁all ▁over ▁the ▁eastern ▁half ▁of ▁the ▁US , ▁Lar sh ▁went ▁national . ▁He ▁attract ed ▁fans ▁all ▁over ▁the ▁region , ▁and ▁became ▁a ▁huge ▁hit . ▁W K Y C ▁was ▁listed ▁as ▁the ▁number ▁three ▁record - bu ying ▁influence ▁in ▁Miami ▁in ▁that ▁era , ▁no ▁doubt ▁due ▁to ▁' Big ▁Jack ' ▁and ▁the ▁ 5 0 , 0 0 0 - w att ▁night ▁signal ▁that ▁was ▁so ▁strong ▁over ▁the ▁East ▁Coast ▁of ▁the ▁US . ▁ ▁Lar sh ▁moved ▁on , ▁working ▁at ▁other ▁ 5 0 , 0 0 0 - w att ▁stations ▁such ▁as ▁W ME X - 1 5 1 0 ▁in ▁Boston ; ▁CH UM - 1 0 5 0 ▁in ▁Toronto ; ▁K FI - 6 4 0 ▁in ▁Los ▁Angeles , ▁K T N Q - 1 0 2 0 ▁in ▁Los ▁Angeles , ▁and ▁W