, ▁W CB M ▁had ▁moved ▁to ▁the ▁H ear st ▁Tower ▁Building ▁in ▁Baltimore . ▁ ▁It ▁broadcast ▁on ▁ 1 3 5 0 ▁kil ocy cles ▁but ▁was ▁only ▁power ed ▁at ▁ 5 0 0 ▁w att s ▁by ▁day , ▁ 2 5 0 ▁w att s ▁at ▁night , ▁while ▁compet itor ▁W B AL ▁ran ▁ 5 0 , 0 0 0 ▁w att s . ▁ ▁W CB M ▁was ▁the ▁N BC ▁Blue ▁Network ▁affili ate ▁for ▁Baltimore , ▁carrying ▁its ▁dram as , ▁com ed ies , ▁news ▁and ▁sports , ▁during ▁the ▁" G old en ▁Age ▁of ▁Radio ." ▁ ▁The ▁Blue ▁Network ▁later ▁became ▁ABC . ▁ ▁W CB M ▁moved ▁several ▁times ▁on ▁the ▁d ial . ▁ ▁With ▁the ▁ 1 9 4 1 ▁en act ment ▁of ▁the ▁North ▁American ▁Regional ▁Broadcast ing ▁Ag re ement ▁( N AR BA ), ▁it ▁switched ▁from ▁ 1 3 5 0 ▁to ▁ 1 4 0 0 . ▁ ▁Then ▁in ▁ 1 9 4 9 , ▁it ▁re located ▁to ▁its ▁current ▁d ial ▁position , ▁ 6 8 0 ▁k Hz . ▁ ▁The ▁move ▁allowed ▁W CB M ▁to ▁increase ▁its ▁power ▁to ▁ 1 0 , 0 0 0 ▁w att s ▁in ▁the ▁day time ▁and ▁ 5 , 0 0 0 ▁w att s ▁at ▁night . ▁ ▁As ▁network ▁programming ▁shift ed ▁from ▁radio ▁to ▁television ▁in ▁the ▁ 1 9 5 0