The TechniSat Digit Tenne TT1 is a simply ingenious antenna that replaces the Freeview necessary solubilizing roof antenna with me. It amplifies the VHF range (channels 2 to 12) and FM (87.5 - 108.8 Mhz) by up to 20dB; in the UHF range (channel 21 to 69) by up to 36dB. Since the transmitters transmit only in the UHF range, you can save the exhaustion of the rear antennas (except you close the device to an FM Radio USB stick into); the UHF range is received only via the parabolic mirror. The DigiTenne TT1 has a separate on / off switch, which means that you do not need to set each time the gain. Commissioning is simple: The 1.3m long power cord plug into the socket and turn on the 1m long antenna cable to the receiver, and Antene Align transmitter, adjust gain, finished.