▁the ▁most ▁listened - to ▁and ▁most ▁influ ential ▁contemporary ▁hits ▁stations ▁in ▁Michigan . ▁ ▁In ▁the ▁ 1 9 7 0 s , ▁during ▁its ▁peak ▁of ▁popular ity , ▁its ▁s log an ▁was ▁" The ▁TR U ▁spirit ▁of ▁America ". ▁During ▁the ▁station ' s ▁later ▁years , ▁one ▁of ▁the ▁DJ s , ▁Larry ▁Allen , ▁hosted ▁an ▁FM - like ▁program ▁called ▁" S pect rum " ▁on ▁late ▁Saturday ▁night s . ▁This ▁program ▁riv aled ▁the ▁FM ▁stations ▁of ▁the ▁day . ▁Allen ▁( who ▁died ▁in ▁December ▁ 2 0 1 3 ), ▁later ▁hosted ▁a ▁Saturday ▁night ▁deep - track ▁show ▁on ▁W MM Q - FM ▁( 9 4 . 9 ) ▁in ▁L ans ing , ▁Michigan . ▁The ▁station ' s ▁influence ▁and ▁popular ity ▁w an ed ▁with ▁the ▁w ax ing ▁of ▁FM ▁radio ▁in ▁the ▁late ▁ 1 9 7 0 s — by ▁the ▁end ▁of ▁the ▁ 1 9 7 0 s , ▁however , ▁as ▁rock ▁music ▁continued ▁its ▁shift ▁from ▁AM ▁to ▁FM , ▁W TR U ▁had ▁shift ed ▁to ▁a ▁full - service ▁adult ▁contemporary ▁format . ▁▁ ▁The ▁Top ▁ 4 0 / CH R ▁format ▁returned ▁to ▁ 1 6 0 0 ▁AM ▁in ▁ 1 9 8 6 ▁as ▁W TR U ▁began ▁to ▁sim ul cast ▁" S un ny " ▁ 1 0 4 . 5 ▁W SN X - FM , ▁taking ▁the ▁W