A na-egosi netwọk ndị a? N'iburu ajụjụ nke mbụ n'uche, dee ihe gbara ya gburugburu bụ́ nke ga-enye azịza ya. Ọ nwere ike ịbụ 1 - 20 ahịrịokwu. Ihe ndị gbara ya gburugburu:
Ozugbo a jụrụ arịrịọ Mutual megide FCC, RCA kpebiri ire NBC Blue na 1941, ma nye Mark Woods ikike ime ya. RCA tụgharịrị NBC Blue Network n'ime ụlọ ọrụ nọọrọ onwe ya, na-agba alụkwaghịm na NBC Red na NBC Blue na Jenụwarị 8, 1942, ebe a na-akpọ Blue Network na ikuku dị ka "Blue" ma ọ bụ "Blue Network". Ụlọọrụ NBC Red na NBC Blue nke e kewapụrụ ọhụrụ kewara akụnụba ụlọọrụ ha. N'agbata afọ 1942 na afọ 1943, Woods kwụrụ ụgwọ ire NBC Blue Network dum, ngwugwu nke gụnyere mgbazinye na ọdụ ụgbọelu, ikikere telivishọn atọ na-echere (WJZ-TV na New York City, KGO-TV na San Francisco na WENR-TV na Chicago), ndị mmekọ 60, ụlọ ọrụ arụmọrụ anọ (na New York City, Chicago, Los Angeles na Washington DC), nkwekọrịta na ndị na-eme ihe nkiri, na akara metụtara Blue Network. Ụlọ ọrụ itinye ego Dillon, Read & Co. (nke ụlọ ọrụ Swiss Bank Corporation mechara nweta na 1997) nyere $ 7.5 nde iji zụta netwọkụ ahụ, mana onye isi oche Woods na RCA bụ David Sarnoff jụrụ.