Rvfm tv fm indoor antenna rvfm 120 635uk vhf uhf and fm antenna with built in high gain amplifier which will boost the signal the unit features three adjustable antenna a ring housed in a plastic arm which can be adjusted 90 backwards and forwards and two telescopic antenna which can be opened up to 1 metre in length and are fully adjustable there is also a socket to connect an outdoor antenna to use the amplifier to boost the signal br rvfm st54a indoor antenna