▁the ▁I TV ▁companies ▁campaign ed ▁for ▁further ▁frequencies ▁on ▁which ▁to ▁broadcast , ▁though ▁these ▁goals ▁were ▁never ▁wh olly ▁real ised ▁on ▁analog ue . ▁ ▁Channel ▁ 4 ▁and ▁S 4 C ▁After ▁many ▁dec ades ▁of ▁demand ▁by ▁the ▁commercial ▁broad c aster s ▁for ▁a ▁second ▁commercial ▁station ▁or ▁network ▁of ▁stations , ▁Channel ▁ 4 ▁and ▁S 4 C ▁were ▁launched ▁in ▁ 1 9 8 2 . ▁Channel ▁ 4 ▁was ▁originally ▁run ▁as ▁a ▁uniform ▁national ▁service , ▁by ▁the ▁I BA ▁through ▁a ▁subs idi ary , ▁the ▁Channel ▁Four ▁Broadcast ing ▁Company . ▁Channel ▁ 4 ▁does ▁not ▁make ▁the ▁program mes ▁it ▁broadcast s ; ▁content ▁is ▁commission ed ▁from ▁independent , ▁private ▁production ▁companies ▁such ▁as ▁the ▁I TV ▁companies ▁and ▁companies ▁not ▁related ▁to ▁I TV ▁who ▁had ▁previously ▁little ▁space ▁to ▁broadcast ▁in ▁the ▁UK . ▁Channel ▁ 4 ▁was ▁originally ▁fund ed ▁by ▁allowing ▁each ▁local ▁I TV ▁franch ise e ▁to ▁sell ▁ad ver ts ▁during ▁the ▁station ' s ▁air time ▁in ▁their ▁area ▁in ▁exchange ▁for ▁a ▁guaranteed ▁income ▁to ▁be ▁paid ▁to ▁the ▁I BA . ▁The ▁station ▁was ▁established ▁with ▁the ▁intention ▁to ▁provide ▁program mes ▁for ▁minor ity ▁groups ▁and ▁c ater ▁for ▁special ist ▁interests ▁and ▁has ▁a ▁rem it ▁that ▁details ▁these ▁oblig ations . ▁ ▁Since ▁the ▁abol ition ▁of ▁the ▁I BA , ▁which ▁took ▁effect ▁in ▁ 1 9 9 3 , ▁Channel ▁ 4 ▁has ▁been