Audiovideo modulator with an av input and an hf output for connecting a tv set or for feeding in a community system at the input for instance a ccd camera a video recorder a dvd player or a similar device can be connected in this way the childrens room the entrance to the house or any similar sensitive area can be monitored with a camera at the output side a channel is set in the vhfuhf range channel 5 69 by means of simple programming which is otherwise not occupied the signal