H F ▁enthus iast s . ▁Currently , ▁it ▁is ▁used ▁by ▁am ateurs ▁for ▁a ▁variety ▁of ▁purposes . ▁ ▁Am ateur ▁television ▁Am ateur ▁television ▁is ▁a ▁popular ▁activity ▁on ▁the ▁ 3 3 ▁cent imeter ▁band , ▁and ▁some ▁manufact ur ers ▁produced ▁A TV ▁equipment ▁for ▁this ▁band . ▁The ▁first ▁repe ater ▁to ▁use ▁the ▁band , ▁the ▁N U 6 X / R ▁( Am ateur ▁TV ▁Network ) ▁on ▁ 9 2 3 . 2 5   M Hz , ▁was ▁activ ated ▁and ▁used ▁at ▁the ▁minute ▁the ▁F CC ▁allowed ▁amateur ▁use ▁of ▁the ▁band ▁and ▁featured ▁in ▁Q ST ▁Magazine . ▁The ▁repe ater ▁moved ▁to ▁ 9 1 9 . 2 5   M Hz ▁and ▁call ▁changed ▁to ▁W 6 AT N ▁because ▁A VM ▁part ▁ 9 0 ▁service ▁at ▁ 9 2 7   M Hz ▁began ▁operation ▁as ▁a ▁primary ▁user ▁of ▁the ▁band . ▁ ▁C W ▁and ▁single ▁side band ▁Am ateurs ▁who ▁are ▁involved ▁in ▁contest ing ▁use ▁home - made ▁or ▁commer cially ▁available ▁trans ver ters ▁to ▁operate ▁C W ▁and ▁S SB ▁on ▁the ▁lower ▁end ▁of ▁the ▁band , ▁either ▁just ▁above ▁ 9 0 3   M Hz ▁or ▁just ▁above ▁ 9 0 2   M Hz . ▁S SB / C W ▁operations ▁usually ▁use ▁horizontal ▁polar ization ▁for ▁most ▁contacts . ▁ ▁V H F / U H F ▁cont ests ▁are ▁conducted ▁by ▁the ▁AR RL