Airtronics AIR90406 SD-6G 2.4GHz 6-Channel Computer Radio with RX600 6-Channel 2.4G FHSS-1 Digital Proportional Computer Radio Control System for Aircraft and Helicopters Includes Full-Range RX600 (92224) 6-Channel 2.4G FHSS-1 Receiver 10-Model Memory Direct Model Select (Models 1-3) User-Selectable Model Type Templates