... 2. Circuit (GaAs) gallium arsenide power amplifier tubes, efficient, to receive the image clear and stable, longer transmission distance, there ... 1500M-2KM , coupled with 24dB high gain directional parabolic antenna, distance to 10KM above.3. For select more channel, the ... extended frequency functions, multiple frequencies can be extended up to 8 scalable frequencyIf you are interested in our products, ...