RF600 4W Signal Booster Amplifier 2.4GHz Wireless WiFi 802.11 b/g/n Antenna 1.It cam improves cable modem performance in many cases.Compatible with all cable TV systems and over the air antenna signals. 2. It will reduces snow and prevents image pixelation with digital cable. Coaxial cables not included. 3. Uplink gain 15dB (32x) signal boost. The amplifier should be installed BEFORE splitters and long cable runs for best results. 4.Reserved transceiver synchronization control ports, to realize real "zero waste" transmission for high rate data 5.Machine internal adopt high-performance DC-DC circuit,for the different construction environment, customer can choose the different ways of power supply, power supply voltage range is 9v - 36v.