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MOCA and POE Filter

Discussion in 'TiVo Coffee House - TiVo Discussion' started by dave13077, Mar 3, 2013.

MOCA and POE Filter

  1. Yes there is a POE filter installed

    62 vote(s)
    63.9%
  2. No there is not a POE filter installed

    35 vote(s)
    36.1%
  1. nooneuknow

    nooneuknow TiVo User Since 2007

    3,554
    0
    Feb 5, 2011
    Cox Cable...
    I'm showing 951Mhz for mine, plus the width, so I'd say up to ~960MHz, just to be safe.

    I doubt Cox would include the MoCA filter, if they didn't feel it was necessary. They used to guard those things, as "for whole home Cox DVR users only", when I spotted one on a Cox truck. That was before the TA rollout, though.

    The Cox TA install instructions in the self-install kits are assuming you have MoCA. Since I'm all Cat5e to my TiVos, no need for MoCA. I still have less problems using the splitter, than using the amplified pass-through method on the Cisco TAs. YMMV, of course. I'd prefer not using any more splitters than necessary.

    I'm a bit confused on the one post starting off talking about Cat5e, then shifting right to asking where the MoCA filter goes...
     
  2. nooneuknow

    nooneuknow TiVo User Since 2007

    3,554
    0
    Feb 5, 2011
    Cox Cable...
    Are you in an apartment, or multi-family (multiple cable bill) dwelling of any sort?

    If so, it was probably (for a good reason) designed that way, and you should stay out.

    If not, I'd want to see a picture of it, before advising.

    But, since it says Comcast right on the box, it still may be there to keep you out (look for another box, to be sure you are looking in the right place). The phone call seems to be a good idea. I'd advise making sure that any "truck roll" doesn't involve a fee (specifically state you refuse to be charged). If they do want to charge, ask how to open it (and state your reason for opening it).

    Post what you find out, if you don't get what you want/need.
     
  3. mm2margaret

    mm2margaret Meagan

    342
    0
    Dec 7, 2010
    northern...
    So, if I install a POE filter between Comcast and my very first splitter, as the Cable Modem is downstream from the POE filter, can the POE filter interfere with it?
     
  4. nooneuknow

    nooneuknow TiVo User Since 2007

    3,554
    0
    Feb 5, 2011
    Cox Cable...
    Only if you have a cable modem that has MoCA capabilities, and you are using (or intend to use) said unknown capabilities as part of your MoCA network.

    Older cable modems without a built-in PoE filter can benefit by having MoCA signals blocked.

    Newer cable modems tend to have a filter built-in, due to the potential issues.

    A small number newer cable modems have MoCA capabilities, and would need to not be blocked, if their MoCA is going to be used.

    Some will put a PoE filter on the coax-in of the cable modem, if it is one without MoCA, without a built-in filter, or the internal filter fails to work, which can cause unreliable operation (or non-operation).

    What cable modem do you have?
     
  5. JWhites

    JWhites New Member

    1,366
    0
    May 14, 2013
    Wait what? I've used those Actiontec adapters and they do support encryption. That's kinda a MoCA standard.
     
  6. morac

    morac Cat God

    8,954
    22
    Mar 14, 2003
    NJ
    The cheaper ones don't have a way to put the adapter in configuration mode as they lack the switch to do so, so it's not possible to change the encryption key on them. So while they do support encryption, it's not particularly secure since the encryption key is known.
     
  7. ggharter

    ggharter New Member

    1
    0
    Oct 22, 2010
    Comcast provide them free as well. In fact, when I had set-up my MoCA network, and they were out on a different issue, the tech noticed it, and installed it for free, and told me what he had done.
     
  8. mojo_13

    mojo_13 New Member

    9
    0
    Aug 29, 2013
    Using a Roamio OTA and Mini and setup MOCA with a couple of Actiontec routers, bought a 5pk of POE filters on ebay (same price as a 2 pk) and put one where my internet comes in the house. Couldn't get the Mini to see the Roamio and got to looking, found out that the amplifier I added to my antenna was making it not work, but a filter just after the antenna/amp and everything works great. Glad I got a multi pack so I could make this work.
     
  9. Balzer

    Balzer Member

    217
    0
    Nov 12, 2006
    Sioux Falls, SD
    I have a question, but not sure if it has been discussed yet.

    I have a Moca network, and it's working fine. The cable installer put a POE filter on the splitter in the box outside the house. But he also gave me an extra one to attach to my cable modem too. I did connect that, but really wondering if that one really necessary?

    Just curious.

    Thanks,
    Jeff
     
  10. morac

    morac Cat God

    8,954
    22
    Mar 14, 2003
    NJ
    Moca can cause interference on a modem, especially being very close to it. Some modems have a built-in Moca filter, but it can't hurt to add your own.



    I'm still trying to diagnose a problem where occasionally I started getting interference outside the MoCa frequencies on my cable line until I disconnect my MoCa bridge, effectively breaking the MoCa network. It happens more often in the summer (warmer) than in the winter (colder).
     

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