▁can ▁be ▁made ▁and ▁sold ▁world wide . ▁Autom ob iles ▁usually ▁have ▁FM ▁rad ios ▁that ▁can ▁t une ▁down ▁to ▁ 8 7 . 7   M Hz , ▁so ▁that ▁TV ▁channel ▁ 6 ' s ▁audio ▁at ▁ 8 7 . 7 5   M Hz ▁( ± 1 0   k Hz ) ▁could ▁be ▁received , ▁such ▁as ▁in ▁B irmingham , ▁Alabama , ▁and ▁Den ver , ▁Colorado . ▁With ▁the ▁advent ▁of ▁digital ▁television ▁in ▁the ▁United ▁States , ▁this ▁ability ▁will ▁soon ▁be ▁irrelevant ▁when ▁the ▁remaining ▁analog ▁L PT V ▁stations ▁are ▁required ▁by ▁the ▁F CC ▁to ▁shut ▁down ▁or ▁convert ▁to ▁digital ▁by ▁September ▁ 2 0 1 5 — but ▁there ▁are ▁still ▁analog ▁television ▁stations ▁in ▁the ▁sp ars ely - pop ulated ▁regions ▁of ▁northern ▁Canada . ▁There ▁are ▁also ▁analog ▁TV ▁stations ▁on ▁the ▁other ▁contin ents ▁and ▁on ▁scores ▁of ▁different ▁islands . ▁ ▁In ▁the ▁United ▁States , ▁the ▁twenty - one ▁channels ▁with ▁center ▁frequencies ▁of ▁ 8 7 . 9 – 9 1 . 9   M Hz ▁( ch annels ▁ 2 0 0 ▁through ▁ 2 2 0 ) ▁const itute ▁the ▁reserved ▁band , ▁exclus ively ▁for ▁non - com mer cial ▁educational ▁( N CE ) ▁stations . ▁The ▁other ▁channels ▁( 9 2 . 1   M Hz ▁through ▁ 1 0 7 . 9   M Hz ▁( Ch annels ▁ 2 2 1 – 3 0