UHF Modulator,TM70 UHF TV Link Modulator AV to RF Converter IR Extender with Channel Display,Modulator Modulator AV to RF Converter IR Extender,Supporting PAL/NTSC with USB Charge Cable

I would like to tell you about RF modulators. They allow you to create video and audio outputs from a piece of equipment and use them with your existing RF system. This device allows you to watch any TV in your house with this system. The RF input would come from your aerial and the RF output would come from your TV. The signal from your TV would go into the modulator on the yellow white and red phono inputs. The modulator now converts this signal into an RF signal which appears as another TV channel on your TV. On the modulator you will have to select channel 30 or 33, which I have found to be most effective. I have found that the new HD DVR,s do not have video audio outputs, so they cannot be used with a modulator. This is probably because all people view cable tv on their phones rather than a TV, but you can always use a long HDMI lead instead. Thank you for your time, Pat. *br>Hope this helps Chris.