This TV amplifier with 4G filter is ideal for improving reception on a single TV whilst simultaneously eliminating intereference from mobile phone signals. To use, simply plug into electrical socket, connect TV antenna cable into the âANTâ socket and the TV / VCR cable into the âTVâ socket. Once proper connection is made, turn the power on and select gain level as required. Includes 2 x âFâ Type male to PAL female connectors.