JOHNSON CITY, Tenn.— The 10th Niswonger Children’s Hospital Radiothon concluded with more than a half million dollars raised over the two-day fundraiser. The new record of $514,000 surpasses the previous record of donations set in 2021 by about $69,000, kicking off a successful capital campaign focused on expanding the children’s hospital and its services. The two-day event began Thursday and concluded Friday evening after 36 hours of nonstop fundraising, bringing to a close another successful year of fundraising for the region’s only children’s hospital. “We know the community stands beside us, but the generosity still blows us away every year,” said Ballad Health Foundation President Jack Simpson. “In 10 years, our community has banded together to put almost $4 million toward the future of healthcare in the Appalachian Highlands. That’s absolutely incredible.” This year’s radiothon marked several other records, including 30 teams, 240 volunteers and a record 1,400 donations. Over the past decade, the radiothon has helped…