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Combining output from dish home distribution with ota antenna

I have a Dish TV dual tuner receiver. I have combined the satellite signal from the home distribution output and an OTA antenna signal with a diplexer. At the remote TV, I connect that cable to the TV antenna in. I can get the local stations in HD just fine. However, the satellite signal suffers too much. Even if I use a diplexer to split the signals at the remote TV, and plug in only the satellite signal, it doesn't look good. The remote TV is set to receive the satellite signal at channel 21.

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  • wuthrich Sep 24, 2008

    I have included a diagram of my current setup. Thanks so much for your help. Before I try this, I have some questions/comments:

    1. A Dish TV technician installed the system before I bought the HD OTA antenna. The black box in the diagram is a splitter. Is that different from a separator?

    2. Is the port that the aqua colored line is going into the Home Distribution port?

    3. If so, that aqua line is carrying a satellite signal and it is being combined with an antenna signal at the red box. How come that can be a splitter (instead of a diplexer) if it is combining 2 different signals?

    4. Lastly, I forgot to mention that there are actually 2 remote TVs. The other one isn't HD, so I didn't care about it getting the HD OTA antenna signal. Can I still have 2 remote TVs? If so, how will it change the diagram?

  • wuthrich Sep 25, 2008

    Bingo! First of all, you were right about the device that connects to Tuner 1 and Tuner 2. It is a separator, not a splitter. When I connect my system like the diagram above (using splitters instead of diplexers to combine the OTA antenna signal and output from Home Distribution port), I can get a great satellite picture on the remote TVs and also get the local channels in HD on TV2. You were also right about splitting, combining, and splitting the antenna signal. The reception from one of the distant transmitters breaks up now and then. I will check into getting an amplifier. Thanks so much for your help.

  • aaron
    aaron May 20, 2014

    its set up fine its just on the receiver menu the optus d1 option has gone how do i get that back


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You should have your system setup in the following manner below:

You also will only be able to receive the HD locals with a HD OTA antenna. It is possible that you will need to turn the satellite off in this room to view the OTA's effectively.

Also you should use a splitter as depicted in the picture by the red boxes to combine signals of this frequency. The blue box is the diplexer on the incoming satellite feed and the black box is the seperator that most dual tuners use. If yours does not utilize this device you will have another cable coming from the outside of the house to the back of the receiver. The location of the ports on the back of the receiver in my diagram may differ in position on your receiver so obviously connect them to the proper port. I hope this ressolves the issue and there is no need to seperaate the signal at the remote tv as it will only be a duplicate of the same signal you have connected already as OTA and the TV2 backfeed are of the same frequency range.

combining output from dish home distribution with  - 296c440.png

Posted on Sep 23, 2008

  • Jim Franks Sep 24, 2008

    Okay, working with your diagram the fuchsia line is the satellite signal that is 950-2150 mhz it runs into the sat port on the diplexer and combines the signal with that of the OTA line which is orange and enters on the UHF/VHF port. The combined signal then represented by the green line then exits the in/out port and enters the same port on another diplexer behind the TV1 the SAT port carries the high frequency signal into a DPP seperator. This device allows the seperation of of the 950-2150 mhz signal into two seperate bandwiths 950-1450mhz for tuner 1 and 1650-2150mhz for tuner2. It employs bandstacking technology allowing the Dual Tuner to believe it has two incoming satellite feeds. the seperator will have two lines leaving it that go to the Tuner 1 and 2 ports on the receiver. Splitters do not allow for the seperation of signals and diplexers do not allow for band translation so neither will work in this application correctly to replace the seperator. The VHF/UHF port of the diplexer behind the tv will need to be connected to the OTA antenna port.

    The home distribution port has had it's signal stepped down and now does not require a diplexer to combine its signal with the OTA signal. If you run the home distribution and the ota into a splitter and combine the two signals you can now split that combined signal and go to both of your remote tvs.

    This is based on the use of a DPP LNB. If you were to use a dish pro you would have to have two sat lines to the back of the receiver eliminating the seperator.

    As to the number of remote tvs you can have there is no limit but with each splitter or break in the cable you will have db loss degrading the signal. This can be overcome with the implementation of an amplifier. The biggest negative are that all remotes tv will be mirror images of the TV2 and will not be able to view different programming independent of each other. A modulator can change thiis but is expensive or you could add additional receivers and accomplish the same goal.

    I hoe this clarifies things for you a bit. Need anything ellse feel free to ask.


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