▁altern ating ▁current ▁( AC ) ▁he ater ▁fil ament ▁c ath ode ▁for ▁a ▁radio ▁t ube , ▁which ▁then ▁enabled ▁rad ios ▁to ▁be ▁power ed ▁by ▁ordinary ▁transform er - cou ple d ▁household ▁electric ▁current . ▁This ▁was ▁a ▁break through ▁in ▁the ▁technology ▁and ▁became ▁a ▁key ▁factor ▁in ▁popular izing ▁radio ▁reception . ▁He ▁also ▁established ▁the ▁C FR B ▁radio ▁station ▁in ▁Toronto ▁( l ater ▁acquired ▁by ▁outside ▁interests ). ▁In ▁ 1 9 3 1 , ▁he ▁was ▁awarded ▁an ▁experimental ▁television ▁lic ence ▁in ▁Canada . ▁On ▁May ▁ 6 , ▁ 1 9 3 9 , ▁he ▁was ▁working ▁on ▁rad ar ▁when ▁he ▁died ▁suddenly ▁due ▁to ▁comp lications ▁of ▁a ▁hem or rh age , ▁at ▁the ▁age ▁of ▁ 3 8 . ▁He ▁left ▁a ▁wid ow , ▁Vel ma , ▁and ▁a ▁five - year - old ▁son , ▁Edward ▁( known ▁as ▁Ted ). ▁While ▁his ▁business ▁interests ▁were ▁subsequently ▁sold , ▁his ▁son ▁later ▁determined ▁to ▁carry ▁on ▁his ▁father ' s ▁legacy . ▁ ▁In ▁ 1 9 6 0 , ▁Ted ▁Rog ers ▁and ▁broad c aster ▁Jo el ▁Ald red ▁raised ▁money ▁to ▁found ▁Ald red - R og ers ▁Broadcast ing ▁in ▁order ▁to ▁purchase ▁CH FI , ▁an ▁FM ▁radio ▁station ▁in ▁Toronto . ▁Ald red - R og ers ▁Broadcast ing ▁also ▁became ▁a ▁part - owner ▁of ▁Bat on ▁Ald red ▁Rog ers ▁Broadcast ing ▁( B AR B