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Question: Do you plug the transmitter into the tv or into the cable company box?  Our cable box does not have extra connections.
Document: enables me to have tv in exercise room without renting an additional cable box.Already used inbedroom to augment roof antenna to get any cable channel for special events/Pays for itself in a few months then all free.Picture not hd but quite watchable any how.
I originally purchased the NY-GS3200 A/V Transmitter and receiver set in February. It worked so well for me, I decided to purchase the Ny-GS3200X in order to add another television. In fact the original unit(s) worked so well, I PURCHASED a television for the kitchen. Once again I couldn't be happier with the purchase. I can now return to the cable company 3 boxes that are costing me monthly. The shipping was timely, Hook up was just as simple as the original unit(s).
I purchased a transmitter and several (3) receivers so I could broadcast my cable box signal to the downstairs TVs. I tried positioning the transmitter upstairs, and beaming through the floor, but this did not work very well. Downstairs, it works very well; excellent audio and video on the receiving sets. My only other comment is that there is a momentary flicker (loss of signal) when someone walks between the transmitter and the various receivers.
I bought this as a used receiver from Shop Tronics to  go with the Transmitter/Receiver previously purchased. It works as well as the new receiver. I have it placed over 50 feet from the transmitter. The A/V  is sensitive to placement and requires finding a good location. The receiver is on the 1st floor and the transmitter is on the second floor at opposite end of the house attached to my cable box. The first receiver is in the basement at a distance over 30 feet from the transmitter.
The Nyrius NY-GS3200 transmitter/receiver combo does exactly what the description says. It will send video and audio from a set-top cable or satellite box, DVR or any device that has a composite (RCA) audio/video out connection. My only reason for buying this was to avoid running additional cable to connect TVs in bedrooms.The picture and sound are fine as long as you do not push it beyond it's limits. I purchased the sender/receiver combo plus a second receiver in order use our satellite system (located in a first floor living room) in two upstairs bedrooms.
Hey cable company.... I have three of your boxes and a set of these. For the rooms less used,  these are a great little investment and pay for themselves in about 1 year.the real benefit is .... no drilling and ugly  cable runs.
I'm using this to "share" a directv box between a bathroom and bedroom tv. The two TV's are about 30' apart, with a wall/doorway in between. We have two directv remotes for the two TVs. It generally works pretty well. The IR signal from the remote is encoded and transmitted back to the box so we can control the box from the remote TV. The signal isn't great though. The two antennas need to be pointing just right so if they get knocked it gets staticky. Also anyone walking in front of the signal (eg, someone at the bathroom sink) causes static.
replaced an old unit that the microwave interfered with. I can save by not having more than one cable box to supply 4 tv's. Setup was easy.
We installed this for my wife's craft room which did not have a cable connection. Right out of the box it installed in a couple of minutes and has performaed flawlessley. I would not hesitate to get another unit.
Item worked as advertised, I have one in the guest bedroom, and one in the kitchen, transmitter is hooked up to tv in the living room. had some interference with the units, once the proper channels were found and positioning the antenna they worked with no interference. The bedroom receiver is 20 ft. away with a metal studded wall in between  and the other receiver sits on top of the refrigerator in the kitchen, this is the one i thought i would have trouble with interference from the refrigerator but once positioned it worked with virtually no interference,
Answer: You need a spare "video out" from somewhere to make it work (the typical yellow, red and white rca plug combination).  Either from the cable box, or maybe if you have a surround sound system it could have more than one output.  I guess if your tv has a video out block that would work, though I don't think that's typical to have that.