This worked for me. I have an xbox and a tv that was made before 1992 and all it has is a coaxial input. This modulator is portable and simple to set up I just plugged in my svideo and audio visual cords added the power cord, connect the coaxial cable to the TV and cable connection and the hardest part was to decide what channel I want to override 3 or 4. After that, when the source input comes on, the little red light immediately comes on and theres my movie or video game. No fuss or confusion and it shuts itself off when there is no source signal. This really works for me although why I gave it a four star is that my s-video signal was a little blurry to my TV set. The Audio-visual connection worked well. I cant tell where the problem is at but I think the TV set is a good culprit I had it repaired after a lightning strike shorted some circuits. Oh well this item is well worth the $12 spent.
This rf modulator works converts composite sources to rf cable output. As to autoswitching this only applies to the choice between antenna in and ONE video source. You can only attach a maximum of 2 sources. I routed one source to ant. In (game output) and the other source to the composite inputs (DVD) . At first I expected the unit to allow switching between MULTIPLE composite sources. Not so.
This is a followup to a previous posting. I have now installed the RF-modulator and it works like a charm.I have a new HD satellite receiver which has no coax output. I also have a house full of TVs connected via coax. I connected RCA cbles from the satellite receiver to the RFM and then to coax to the other TVs. Now I can watch whatever is tuned on the satellite from any TV in the house. I could have used S-video, but the receiver only had one S-video output and I needed it for other purposes.
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