Just for general info. If you have a satellite dish plugged in to your s7070, you can also take an output from the rf out plug to a second tv. Quality is downgraded, but perfectly watchable. The STB as expected controls the channel on both tv's.
Good luck getting enough signal from an inbuilt modulator to mix with the off air signals tho. I had to get a filter and amplifier to get clean RF out to send out to the garage and shed, just mixing it in to the distribution amp was way weaker than the off air stuff, and there was lots of noise coming in on the channels that I wanted to put the output on.
Levels on those are kept low to stop them causing interference with legit transmissions.
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