SCHAUMBURG, Ill.--(BUSINESS WIRE)--Sparton Corporation (NYSE:SPA) and Ultra Electronics USSI, a subsidiary of Ultra Electronics Holdings plc (ULE), announce the award of subcontracts valued at $9.4 million from their ERAPSCO/SonobuoyTech Systems joint venture. Multiple foreign contracts are represented in these orders for the manufacture of Passive and Active Sonobuoys in support of multiple underwater missions. ERAPSCO/SonobuoyTech Systems will provide manufacturing subcontracts in the amount