This branding was used until 1973 when its newscasts were retitled under the current NewsCenter 5 brand .
Concurrent with WCVB 's sign - on on March 19 , 1972 , the station began its news operations as News 5 .
This branding was used until 1973 when WCVB 's newscasts were retitled under the current NewsCenter 5 brand .
Concurrent with WCVB 's sign - on on March 19 , 1972 , the station began its news operations as News 5 .