RFMOD RF Modulator / Modulator VIDEO - AUDIO TO RF Converter. Converts image VIDEO - AUDIO to RF TV signal to channel selection. All Band (2-4, 5-12, s11-s41, 21-69) and master antenna amplifiers. Trofodoteitai voltage 12-24V DC 50mA voltage supplied and the master antenna amplifiers. It supports all channels. The channel selection is done with DIP switches (dip switch). Dimensions 4x4cm.