Airtronics MT-4 Pistol Grip Radio 2.4G w/Telemetry The Airtronics MT-4 4-Channel 2.4GHz FHSS-4 radio control system is the first 2.4GHz pistol grip radio to provide it's user with telemetry, industry leading latency, SSR (narrow pulse-width, super fast servo response) compatibility and 4 channels with advanced programming, all in one ultra-lightweight, comfortable case.The feature set of the Airtronics Mt-4 Pistol Grip Radio is like no other radio in the hobby today.