Used Bendix King KT-76A, p/n: 066-1062-00 s/n:21266. Sold as removed. The KT 76A is a Class 1A transponder providing maximum performance at altitudes up to 35,000 feet. This compact unit was among the first to incorporate Large Scale Integrated (LSI) circuitry, reducing both weight and power requirements. And today, its design efficiency and rugged construction offer a near-ideal balance of performance, reliability and value.