A:AnswerYes, this can be used as a combiner. Simply flip it upside down attach your two antennas and run coaxial to your preamp. All these are designed to also be combiners unless specifically engineered to be one way!
A:AnswerA powered antenna would but the splitter nope. It might provide a better connection than you had but that is about it. As far as I experienced.
A:AnswerThis is exactly what you need. Your case is very similar to mine. I used this to split the port on the wall between internet modem and cable tv.
A:AnswerI have not had any problems with that type of connection. I have a powered antenna and a non powered HD antenna connected to my uhd 4k tv with no problems and the picture is great with no interference. Just make sure the antennas are pointed toward a transmission tower nearest to you or in the general direction to get the best reception. But using two antennas really improves the reception.
A:AnswerYes, I just send it to combine my old antenna wire ( giving me 45 free channels) to my Comcast wire, so that I have backup when the Comcast goes down.
A:AnswerThose are the steps but you will need to access setting on your device and scan for channels. If you are using your satellite box as just a pass-through to your television then you will need to keep your television input set to your satellite box then check to see if you have a toggle between satellite and tv. If you do, then set it for tv and go to settings and usually (manufactures vary) you'll find an Antenna heading. Under that heading you should find options one of which will be scan for channels. Select this and wait for it to scan. You may have to re-position your antenna several times to get the channels you are desiring.
Good Luck!
A:AnswerYou have it basically but you might have a weaker signal so you might want to look at a signal booster to strengthen you signal so you don't leave yourself with a weak signal.