1.Replace your satellite system or your CATV connection through aDVB-T antenna and a DVB-T receiver. 2.Best digital TV,easy to use. 3.Fully screened coaxial cable for interference free and easy installtion. 4.Rejection filter to solve GSM interference. 5.Compatible with all DVB-T receivers. 6.Power supply: Currency: 250mA 7.Voltage: (1).RF connector of Antenna insert a receiver with 9V-power (2).separately DC 9V-power insert the socket of Antenna. 8.Reception range : 47MHz-1000MHz 9.Amplification: 20dB or 30dB.