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Professional DIY radio communication equipment has changed over the years but this is a very big change moving from analog to digital ; the major brands are CUAV , XBEE & SLNTOR! The change has radios operating on 2.4ghz with range of over 20 kilometers caring control , telemetry signals as well as hiy definition video. It supports 2.4GHz (2. 402~2. 478 GHz) and suitable for long distance, stream and wireless transmitting application. The transmitting rate up to be 70Mbps and the farthest transmission distance is 20km air to ground. there is a number of new radios on the market replacing the old 3DR Radios on 400mhz - 900mhz, also WiFi to x bee radios. CUAV P 900 RADIO DATA TRANSMISSION MODULE 1000MW 1W 2PCS WIRELESS FOR PIXHAWK/PIXHACK FLIGHT CONTROLLER Frequency 902 - 928 MHz WTR24 Wifi to Radio module transfer xbee/sx/p900 data transmission wireless standards IEEE 802.11g, IEEE 802.11b transmission speed 11g : Up to 54Mbps, 11b: up to 11Mbps WIFI communication distance 150-500 meters (depending on computer or mobile phone) baud rate 57600 attended mode UDP：14550 channel range 1 - 13 (default 11 channels) frequency range 2412 - 2472MHz highest support 1080p input and 720p output. Connected to the computer via WiFi, mobile phone and other equipment. Transmission Range : 1-3km, EIRP : 500mW X2, Receiver Sensitivity (1%PER) : -95dBm ±2dBm, Frequency : 2.4GHz ISM Video Input Format : HDMI : 720P 1080P, Support : GOPRO3 GOPRO4 Xiaomi Yi camera which with HDMI output. http://brushlessgimbal.ca