The North Shore has lost a radio local voice. Bloomberg Radio, a nationwide 24-hour business and finance radio network, has taken over Newburyport’s WNPB. “We are excited to extend our broadcast footprint in the Boston market,” said Al Mayers, global head of Bloomberg Radio and Television. “Programming this station in Newburyport gives us the opportunity to provide timely financial information and world news to our listeners during their commute to and from the North Shore. Over the next few weeks, technical upgrades will be completed to make the experience even better.” Pending Federal Communications Commission approval, Bloomberg will take complete ownership of the station from Port Broadcasting, which had been broadcasting local content since 1957.Linda Greenstein can be reached at email@example.com.