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SWM & SWMline general discussion

Discussion in 'DIRECTV Installation/MDU Discussion' started by Doug Brott, Jul 30, 2008.

  1. Dec 1, 2008 #401 of 1305
    ShrikeT

    ShrikeT Cool Member

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    Jun 3, 2008
    Hey guys, I'm looking into getting the SWM LNB added to my setup and I have a question. I've read about people combining a cable internet signal (roadrunner) with the SWM output on one RG-6 cable and I need to do the same thing. What diplexer/signal combiner/splitter combo should I use for this? Whats the success rate of doing this to begin with and is it even worth trying? Thanks.

    Actually, looks like the Holland STVC is what I'm looking for. Passes all the way down to 5MHz on the TV side.
     
  2. Dec 4, 2008 #402 of 1305
    Sixto

    Sixto Well-Known Member

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    Starting to think that it's a myth that dual SWM's requires 1-side power passing splitters between the dish and the SWM's.

    A myth that I truly believed for about a year. :)

    Who knows, I may have started (or at least confirmed) the myth :) :)

    Now been running with dual SWM's on dual power passing splitters for almost a week now. All is well.

    Had issues (all details in separate thread) after expanding the previous 1-side power passing configuration.

    At least one other source has confirmed that dual power passing is preferred between the dish and the SWM's.
     
  3. Dec 4, 2008 #403 of 1305
    dmurphy

    dmurphy Active Member

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    Sep 28, 2006
    Oy vey!

    I went through this quite a while ago with dual multiswitches... had lots of issues till I put in the single-port-power-pass splitters.

    Now I have a SWM8/WB68 setup, and the single-port-power-pass splitters are still in use ... the SWM8 is on the power passing leg, and the WB68 is on the non-power leg.

    Shouldn't make any difference, EXCEPT, that if the SWM8 loses power for whatever reason, the WB68 will also lose connectivity (since it can't power the LNB) ... found that out the hard way during initial setup - tried tuning a receiver on the WB68 and got no signal... confused the crap outta me till I remembered that the power comes from the SWM8. Plugged in the SWM8, and it worked great.
     
  4. Dec 4, 2008 #404 of 1305
    Sixto

    Sixto Well-Known Member

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    Yep, only referring to dual SWM's.
     
  5. Dec 4, 2008 #405 of 1305
    veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    Dec 9, 2006
    "The myth" dates back to the early days and Earl [for one] who knew of problems when using a powered multi-switch. I could never understand "the why". DC voltage couldn't be a problem, which only left the 22 KHz tone. The only thing that could make sense, is either a phase problem [out of phase] or perhaps a slight variation of frequency. Both could "corrupt" the tone.
    Two non powered multi-switches must have both ports power passing [duh] or 771 errors will happen.
    Powered & non powered can work with the powered on the passing leg.
    Two powered [SWM] can work with dual power passing legs, but perhaps this is best done with switches from the same manufacturer.
     
  6. Dec 4, 2008 #406 of 1305
    Sixto

    Sixto Well-Known Member

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    Yep.

    Was basing my new comments on 2 things:

    1) Dual power passing seems to work just fine. Now been running fine with the new configuration since last Friday.

    2) To get an educated opinion, I did reach out this week to a distributor that sells SWM's and a "splitter package" for dual SWM's. They recommended dual power passing and they ship dual power passing.

    Back in the day, SWM's were a black market item so we just went with the original assumptions. I did run with the 1-side power passing since February until the recent expansion of the environment caused problems. I may never 100% confirm that the splitters were the problem but am running fine with dual power passing now. Still have one more test when I add to the legacy port, but wanted to give the setup a week before any more changes.
     
  7. Dec 4, 2008 #407 of 1305
    jpitlick

    jpitlick Icon

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    Apr 19, 2007
    I just bought a SWM-8 w/power inserter and an SWS-4 splitter so that I can get Verizon FiOS without having to add another feed into my house. I have an HR20-700, an H20-100, and I trading my R15-500 to whatever HR2X DirecTV is sending me. My house has all the necessary cabling with the correct connectors. The dish is properly aimed.

    I'm pretty sure I know how to hook everything up. I hook the 4 sat lines to the SWM. Hook the power inserter (using the correct port) to the SWM and the other port goes to the splitter which will distribute to the receivers without BBCs, which I only connect to port 1 for the DVRs. I also know not to connect power to the receivers until the SWM and power inserter are connected. Are there any other details that I am missing? Thanks.
     
  8. Dec 4, 2008 #408 of 1305
    rudeney

    rudeney Hall Of Fame

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    May 28, 2007
    That sounds like it. Just make sure any unused SWM ports are properly terminated. The SWM8 will come with a terminator installed on its SWM-2 port, so if you run everything off SWM-1, then you're set. Note that the PI must go through SWM-1, either directly or via the power-passing port on the splitter.
     
  9. Dec 4, 2008 #409 of 1305
    Sixto

    Sixto Well-Known Member

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    And at least 15 feet of cable between the PI and the SWM.
     
  10. Dec 4, 2008 #410 of 1305
    jpitlick

    jpitlick Icon

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    Right. I didn't mention that because my SWM will be outside and the PI will be in the wiring closet that is over 15 feet away.

    Thanks.
     
  11. Dec 14, 2008 #411 of 1305
    Skypalace

    Skypalace Mentor

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    Nov 12, 2006
    I haven't followed this thread for a while, looks like SWM is now a lot more mainstream, being done by D* installers, etc.

    My Q: Will D*/Ironwood do SWM for me as part of install, if necessary to get 2 tuners working in a particular location? Or do I need to go aftermarket?

    I have one location (console in the middle of my master bedroom) with only a single coax run, I want to upgrade my R15 to an HRXX. I have two HR20's and multiple R15's elsewhere, so currently have an Ironwood-installed cascading Zinwell 6x8 setup (3 6x8's to make a single 'logical' 6x16 which they didn't have).

    If I do the upgrade to an HR21 for that location, will they do the SWM8 as part of the install (running it in parallel with one of the Zinwell's work work great and minimize issues, I still have two old legacy Hughes boxes, and I'm not sure if the R15's are all SWM-compatible)?

    A second coax run is not an option, this is in the middle of the room on the second floor, no way to get to it without tearing up carpet/floor, or the ceiling below. This is why I held off, but now that I have an HD display up there, the R15 picture just don't cut it, and not having two working tuners is a PITA for recording etc.
     
  12. Dec 14, 2008 #412 of 1305
    LameLefty

    LameLefty I used to be a rocket scientist

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    Middle...
    I don't know if your installer will do it, but it's dead-easy to install an SWM yourself. Seriously, it's four splitters and 8 short jumpers. You've already got the jumpers from your cascading setup, so just order a few Skywalker splitters from SolidSignal.com for about three bucks each and you'll have all you need.

    And no, the R15 is NOT SWM-compatible. You can run one off two of the three legacy ports or the multiwitch if you run it in parallel.
     
  13. Dec 14, 2008 #413 of 1305
    Aztec Pilot

    Aztec Pilot Legend

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    Oct 11, 2007
    OK, tonight I split my 4 sattelite feeds with Skywalker splitters and sent the outputs to the new SWM8 and the old Zinwell 6X8. Everything seemed to be getting back to normal. Then I plugged in the PI. I now have no sattelite signal.

    I have performed a few RBR, no luck. The PI is unplugged. The PI was hooked up with the SWM (red) port cabled to the SWM1 on the multi switch. The IRD went to the SWS-4. A HR20 plugged in to #1.

    Please Help.
     
  14. Dec 14, 2008 #414 of 1305
    Aztec Pilot

    Aztec Pilot Legend

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    Oct 11, 2007
    Removing the 4 splits and going back to the Zinwell restored all function. So now to trouble shoot.
     
  15. Dec 14, 2008 #415 of 1305
    adam771

    adam771 New Member

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    Dec 14, 2008
    okay not too sure on your lingo. but try puting the power inserter behind the hdvr. now are you running one of the old kaku swm conversion switches or running off a swm LNB?
     
  16. Dec 14, 2008 #416 of 1305
    Aztec Pilot

    Aztec Pilot Legend

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    Oct 11, 2007
    Found that I had a bad cable(a loose connector) on on of my splits.. Also I only had 4ft of cable between the SWM8 and the PI. Put a 18ft cable on and now everything is in order.
     
  17. Dec 16, 2008 #417 of 1305
    hdtvfan0001

    hdtvfan0001 Well-Known Member

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    If I had a nickel for every time a bad connector ended up being someone's problem...I could buy DBSTalk! :D
     
  18. Dec 17, 2008 #418 of 1305
    Skypalace

    Skypalace Mentor

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    Nov 12, 2006
    Thyanks, I guess I should have been more precise. Will D* provide the SWM, ie. can I get them to spend the $ to give me a properly working system, rather than it coming out of my own pocket. I'm not worried about the install or the splitters.

    Not that it'll break me, but if they plan to do a truck roll for the HR21, can I expect them (esp if I mention in advance) to have the SWM and supply it, or will I need to source it myself.
     
  19. Dec 18, 2008 #419 of 1305
    Pia-chan

    Pia-chan Cool Member

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    Sep 3, 2008
    I didn't want to roll the dice, so I invested $130 in advance to buy a new SWM head for the dish, a power inverter, and a splitter. I guessed (correctly) that D* would not do an SWM installation for us as we wanted only two DVRs. Our install went smoothly...the tech was willing to use our SWM-related parts, which in turn made the overall install easier for him. Two HR22s with no BBCs and we were good to go.
     
  20. Dec 18, 2008 #420 of 1305
    Skypalace

    Skypalace Mentor

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    Nov 12, 2006
    Hmm, perhaps because it's cheaper for them to just twin the coax to each DVR, so it wasn't deemed 'necessary'.

    Has anyone here had D* supply an SWM-8 for them for a 'necessary' install (such as for which it's not possible to do two coax runs to a particular location, and there's an existing single run).

    I'll probably just do what I did last time, and call the local Ironwood office in advance, once the order is placed with D* and the install scheduled, and discuss all the details to ensure they fully understand it.

    I'd just hat eto do all that, get a great install date, then have to get the equipment myself and not have it in time for the install, though of course I could just do it myself, as LameLefty says, it is simple enough that even I could do it :)
     

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