Lone Star Aviation’s new 14 to 28.0 vdc STEP-UP Converter is the smallest, most efficient (90%), and the most reliable STEP-UP converter in our industry today. This third-generation DC converter is ideal for applications that require voltage from 14 to 28 volts, such as the Bendix King KX-155, KX-165, KY-196A, KY-196B, Motorola VHF/UHF transceivers, and Artex ELTs.