▁Some ▁other ▁countries ▁have ▁already ▁dis cont in ued ▁the ▁O IR T ▁band ▁and ▁have ▁changed ▁to ▁the ▁ 8 7 . 5 ▁to ▁ 1 0 8   M Hz ▁band . ▁ ▁Fre quency ▁mod ulation ▁radio ▁origin ated ▁in ▁the ▁United ▁States ▁during ▁the ▁ 1 9 3 0 s ; ▁the ▁system ▁was ▁developed ▁by ▁the ▁American ▁elect rical ▁engineer ▁Ed win ▁Howard ▁Arm strong . ▁However , ▁FM ▁broadcast ing ▁did ▁not ▁become ▁w ides p read , ▁even ▁in ▁North ▁America , ▁until ▁the ▁ 1 9 6 0 s . ▁ ▁Fre quency - mod ulated ▁radio ▁waves ▁can ▁be ▁generated ▁at ▁any ▁frequency . ▁All ▁the ▁bands ▁mentioned ▁in ▁this ▁article ▁are ▁in ▁the ▁very ▁high ▁frequency ▁( V H F ) ▁range , ▁which ▁extends ▁from ▁ 3 0 ▁to ▁ 3 0 0   M Hz . ▁ ▁CC IR ▁band plan ▁ ▁Center ▁frequencies ▁While ▁all ▁countries ▁use ▁FM ▁channel ▁center ▁frequencies ▁ending ▁in ▁ 0 . 1 , ▁ 0 . 3 , ▁ 0 . 5 , ▁ 0 . 7 , ▁and ▁ 0 . 9   M Hz , ▁some ▁countries ▁also ▁use ▁center ▁frequencies ▁ending ▁in ▁ 0 . 0 , ▁ 0 . 2 , ▁ 0 . 4 , ▁ 0 . 6 , ▁and ▁ 0 . 8   M Hz . ▁A ▁few ▁others ▁also ▁use ▁ 0 . 0 5 , ▁ 0 . 1 5 , ▁ 0 . 2