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msmith1199's avatar
msmith1199
Explorer II
Aug 13, 2013

Upgrading the TV's coax question.

One of the projects on my to do list is to upgrade my old TV's to HD LED's. Last year when my old in motion satellite dish quit working I replaced it with a HD dish. Just recently DirecTV told me my old analog satellite box that was in the motorhome would quit working so I upgraded it the Sat Box to an HD box. Just this weekend I went to install the new HD box and discovered a problem. The HD Box has a coax input but no coax output like the old analog box. It only has outputs for the various types of HD and digital cables. The problem is the rear TV and the outdoor TV only have coax running to them. I did a Google search to see if I could find an adapter to be able to send the digital signal from the Sat box over coax but couldn't find one.

This won't be a problem for the front TV as I can just run a digital cable from the box to the TV, but I'd also like to get satellite, even if it is not an HD signal, to the back TV and the outside TV. Anybody else solved this problem?
Class A
  • Big_Katuna's avatar
    Big_Katuna
    Explorer II
    Aug 13, 2013
    wilanddij wrote:
    big katuna wrote:
    I ran a sat feed to the rear via the existing coax and added a sat box in the bedroom.
    The modulates degrade the signal too much for me.
    With an AB switch you can send sat or antenna signal to the back.
    You can do the job without running extra coax to the BR TV. Here's how:


    I didn't run a second co-ax to the rear. Don't plan to. This schematic would work if you had a roof top dish, but I use a tripod. The SWM 8 with OTA plexer has four cables from the LNB. I use the single wire LNB with the built in switch and would have to run my antenna back outside to the switch.

    I run one wire from the dish to the cable input outside which gets it to the front Av center. From there I will use a four wide splitter with power inserter and di plex the sat/antenna to the rear and out side tv which runs from the rear tv area to the outside bay. I will probably use an AB switch back there as I understand trying to split the diplexed signals(s) will attenuate the signal too much. I don't care that the outside and rear tv are on the same channel. When we have all three tv's on, its football season.

    Its a work in progress, hope to have it alll done this weekend.
  • wilanddij's avatar
    wilanddij
    Explorer
    Aug 13, 2013
    Some of you need to learn to speak English!
    Sometimes ya just gotta get ur nerd on :D
  • msmith1199's avatar
    msmith1199
    Explorer II
    Aug 13, 2013
    Some of you need to learn to speak English! :)

    But thanks, you've answered my question. Now I know what to look for.
  • eadeal55's avatar
    eadeal55
    Explorer
    Aug 13, 2013
    I've got diplexers on both the front end and back end of the RG6 cable that runs fore to aft in my MH. That way I can put both the SAT signal and the ANT signal onto that single cable.

    At the rear TV, I mounted a triple connection plate, and connected the SAT, ANT and TV cables to the back of it (in the closet). On the front side of the triple plate, SAT goes into the DTV box, ANT goes into the DTV box, and the TV cable from the SAT box goes to the TV connection on the triple plate.

    If DW wants to watch a movie instear of DTV or off-air TV, she connects her DVD player into the Video 2 RCA connection on the front of the TV, and selects Video 2 on the TV.
  • wilanddij's avatar
    wilanddij
    Explorer
    Aug 13, 2013
    big katuna wrote:
    I ran a sat feed to the rear via the existing coax and added a sat box in the bedroom.
    The modulates degrade the signal too much for me.
    With an AB switch you can send sat or antenna signal to the back.
    You can do the job without running extra coax to the BR TV. Here's how:
  • Big_Katuna's avatar
    Big_Katuna
    Explorer II
    Aug 13, 2013
    I ran a sat feed to the rear via the existing coax and added a sat box in the bedroom.
    The modulaters degrade the signal too much for me.
    With an AB switch you can send sat or antenna signal to the back.
  • haydoracin's avatar
    haydoracin
    Explorer
    Aug 13, 2013
    docj is correct. I use the RF modulator method in our MH with HD DVRs to connect to the non-HD TVs. However, I found mine at Wally World for about $15.
  • docj's avatar
    docj
    Explorer
    Aug 13, 2013
    There are devices that can take the HDMI output of the receiver and transmit it over RG6 coax while retaining the HD quality. They aren't cheap, but it depends on how important HD is to you. Here's an example of one: HDMI to coax

    Alternatively, you can take the non-HD output of the receiver (the yellow, red, white cables) and put them into a modulator that will put the signal onto a coax. Modulators are a lot more affordable than HDMI-coax converters. Here's one: RF modulator

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