Magnadyne VCS-10 Video Switching Center

Is anyone familiar with this unit? It doesn’t have a HDMI connector and I have 3 tv’s I am trying to connect through the center..I have tried composite cables from the 211z receiver going through the DVD connections and tried a rf modulator composite cables from the receiver to the modulator and having no luck. I am going from the modulator to a connection labeled “to satellite receiver output” on the panel. I can’t get the tv input to recognize the AV input. The instructions state to put the tv on channel 3or 4 but my tv doesn’t get a signal and automatically goes to the closest channel that is getting a signal.

I ran a HDMI cable across the room to the tv and it worked great. I know I can get a wireless HDMI component for the front tv but would like to connect the other tv”s to this station. I’ve had some help getting this far but I am stuck again. Any suggestions are appreciated.