Quality modulator that has adjustable (agile) UHF output so you can mix the AV input signal from a DVD, Satellite decoder, VCR or any other AV source with off the air TV signals from your antenna without any interference. This unit even features gain control for the Video and Audio so you can match the audio level so all channels on your TV are the same level.  F type connections are featured on this modulator so we also supply the necessary adapters so you can connect your antenna input and output using industry standard PAL connection.