A YouTube telethon to raise money for the ARRL Teachers Institute on Wireless Technology was a resounding success. More than $21,000 was contributed during the livestream, which unlocked another $20,000 that donors had set out as a challenge gift. ARRL Director of Development Kevin Beal, K8EAL, says that upped the ante. “It's quite clear that even with the generosity of the donors in attendance...