San Diego-based NexAira, a venture-backed developer of 3G/4g wireless data products, said this morning that it has added two telecom vets to its board of directors. NexAira said that former president and acting CEO of Novatel Wireless, Brad Weinert, and the previous CEO of Radiant Communications, Jim Grey, have joined the firm's board of directors. NexAira is a developer of wireless routers, used to deploy wireless networks for retailers, digital signage, vehicles, surveillance, and other uses.