▁ph ones ▁support ▁and ▁mobile ▁phone ▁operators ▁use ▁- ▁used ▁by ▁all ▁mobile ▁phone ▁operators ▁at ▁the ▁same ▁time ▁to ▁a ▁certain ▁space ▁where ▁e . g . ▁humans ▁are ▁exposed ▁to ▁these ▁frequencies ▁over ▁a ▁certain ▁span ▁of ▁time . ▁More : ▁Mobile ▁phone ▁radiation ▁and ▁health ▁section . ▁ ▁In ▁IT U ▁Region ▁ 3 , ▁New ▁Zealand ▁dom est ically ▁alloc ates ▁ 9 1 5   M Hz ▁to ▁ 9 2 8   M Hz ▁to ▁am ateurs . ▁In ▁Australia , ▁this ▁spectrum ▁is ▁allocated ▁to ▁radi ol ocation ▁and ▁scientific - med ical ▁services . ▁ ▁History ▁▁ ▁Origin ▁as ▁a ▁replacement ▁for ▁ 1 2 1 5 - 1 2 4 0   M Hz ▁ ▁Rel ation ▁to ▁W AR C ▁ 1 9 7 9 ▁ ▁Rel ation ▁to ▁G PS ▁allocation ▁ ▁The ▁ 3 3 ▁cent imeter ▁band ▁has ▁a ▁somewhat ▁short ▁history , ▁being ▁one ▁of ▁the ▁new est ▁amateur ▁radio ▁bands . ▁The ▁Radio ▁Reg ulations ▁of ▁the ▁International ▁Tele communic ation ▁Union ▁allow ▁amateur ▁radio ▁operations ▁in ▁the ▁frequency ▁range ▁from ▁ 9 0 2 . 0 ▁to ▁ 9 2 8 . 0   M Hz . ▁ ▁The ▁beginning ▁In ▁ 1 9 8 5 , ▁the ▁Federal ▁Communic ations ▁Commission ▁allocated ▁the ▁frequency ▁band ▁between ▁ 9 0 2 ▁and ▁ 9 2 8   M Hz ▁to ▁Part ▁ 1 8 ▁IS M ▁( Ind ust rial , ▁Scient ific , ▁and ▁Medical )