Smaller and lighter 4 channel 24 ghz fasst receiver for indoor and park flyer small quartz no frequency channel selection and highest safety against channel interferences through 24 ghz fasst technology best possible suppression of interference signals through fast frequency hopping high intermediate frequency of 800 mhz as such insensitive to electro smog simple linking through integrated easy link button can be used with all fasst transmitters starting from 6 channels in the 7 channel