TBS Tracer Nano TX Starter Set [SL4]In a race, microseconds count! Goggles down, thumbs up are you ready for a true 250Hz radio link? End to end latency: barely noticeable. Nothing else comes close! Thanks to 2. 4GHz technology, TBS took the best from Crossfire and shrunk it down to speed it up. The end result: Smaller antennas, more speed, and range for days. The TBS Tracer Nano TX Starter Kit comes with one TBS Tracer Nano TX, three TBS Tracer Nano RX, and six TBS Tracer Immortal T