od ers ▁and ▁equipment ) ▁and ▁Chart well ▁Enter pr ises ▁( owned ▁by ▁media ▁executive ▁A . ▁Jer ro ld ▁Per en chio ). ▁The ▁station ' s ▁transmit ter ▁and ▁studio ▁facilities ▁were ▁located ▁on ▁the ▁ 9 7 th ▁floor ▁of ▁the ▁John ▁Han cock ▁Center ▁on ▁North ▁Michigan ▁Avenue ▁in ▁the ▁Stre eter ville ▁neighborhood . ▁The ▁station ▁never ▁dis closed ▁its ▁ownership , ▁in ▁any ▁of ▁W S NS ' ▁formats , ▁during ▁regular ▁sign - ons ▁or ▁sign - offs . ▁ ▁Initial ly , ▁channel ▁ 4 4 ▁maintained ▁an ▁all - news ▁programming ▁format . ▁During ▁the ▁day time , ▁the ▁station ▁a ired ▁an ▁al phan umeric ▁feed ▁of ▁news ▁reports ▁supplied ▁from ▁various ▁wire ▁services ▁set ▁to ▁continuous ▁elev ator ▁music , ▁with ▁a ▁commercial ▁b anner ▁placed ▁on ▁the ▁lower ▁third ▁of ▁the ▁screen ▁displaying ▁advert is ements ▁for ▁business es ▁such ▁as ▁Cont inental ▁Bank , ▁Jew el ▁Food s ▁and ▁other ▁clients . ▁Every ▁seven ▁minutes , ▁a ▁four - s ided ▁board ▁would ▁be ▁rot ated — which ▁was ▁t aped ▁live ▁on - camera — to ▁display ▁news ▁head lines , ▁traffic ▁reports , ▁sports ▁scores ▁and ▁birth days ▁of ▁notable ▁cele brit ies ▁and ▁other ▁personal ities . ▁On ▁November ▁ 1 6 , ▁ 1 9 7 0 , ▁the ▁station ▁moved ▁into ▁a ▁newly ▁constructed ▁studio ▁facility ▁on ▁West ▁Grant ▁Place ▁in ▁the ▁Lincoln ▁Park ▁community ' s ▁Mid - N orth ▁District . ▁During