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LNB says SWM but has 4 wires, is it SWM or not?

Discussion in 'DIRECTV Installation/MDU Discussion' started by wtford, Jul 1, 2014.

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  1. Jul 1, 2014 #1 of 14
    wtford

    wtford New Member

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    Jul 1, 2014
    Salt Lake City
    I have a working Directv SD setup, but I would like to upgrade to HD.

    I purchased a used H21, which is an HD capable SWM receiver. I am about to purchase a slimline dish with a sl3s4nr2-14 LNB. This LNB has 4 wire feeds coming out of it, but it says SWM on the label. I am confused as to whether this is SWM or not and if it will work with the H21.

    Everywhere I have read says 4-wire means non-SWM. Is this true? Why would it say SWM on the LNB's label?

    If the LNB is SWM, I would need a power-inserter as well, correct? Are the 4 wire feeds unnecessary then?

    If the LNB is not SWM, would one wire from this LNB plugged into the H21 actually work? Can a SWM receiver read from a non-SWM feed? Would I need an A B band converter?

    Thanks!!
     
  2. Jul 1, 2014 #2 of 14
    jimmie57

    jimmie57 Hall Of Fame

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    You will need a PI21 with that LNB since it is SWM. It has 4 spots that look like connections but only one of them is an actual connection.
    You will not need a B Band converter since you will be using SWM.

    If it were to be a 4 connection LNB then you would not need the PI21 but you would need the B Band converter.

    Your SD setup might not work with SWM.
    What receivers do you currently have ?
     
  3. Jul 1, 2014 #3 of 14
    Ken Stomski

    Ken Stomski Mentor

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    Nov 17, 2011
    TS posted the same exact question on another forum and uploaded pictures. It is a mislabeled LNB. It is not swm.
     
  4. Jul 1, 2014 #4 of 14
    studechip

    studechip Godfather

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    I'm not sure it's mislabeled. Just because there are four cables coming from the arm doesn't mean they are connected to the lnb.
     
  5. Jul 1, 2014 #5 of 14
    harsh

    harsh Beware the Attack Basset

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    The model number represents a SWiM enabled LNB assembly. SL3S4NR2-14.JPG

    If the LNB assembly doesn't look mostly like this (perhaps with the F connector located in one of the other positions), it is probably not the right picture or the label has been applied to some other assembly.
     
  6. Jul 1, 2014 #6 of 14
    wtford

    wtford New Member

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    Jul 1, 2014
    Salt Lake City
    Yeah, it's gotta be either mislabeled or has extra cables. I'll have to open it up to make sure. I'm glad that there aren't SWM models that purposely have 4 wires.
     
  7. Jul 1, 2014 #7 of 14
    wtford

    wtford New Member

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    Jul 1, 2014
    Salt Lake City
    I'm not sure what SD receiver I have, but I'm not concerned about keeping the SD. Thanks everyone for your input. I feel better about understanding the non-normal situation.
     
  8. Jul 1, 2014 #8 of 14
    Rickt1962

    Rickt1962 Legend

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    Jul 17, 2012
    My SWiM has 4 wires out of the Dish ! for 16 ports
     
  9. Jul 1, 2014 #9 of 14
    sigma1914

    sigma1914 DIRECTV A-Team DBSTalk Club

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    That's not a SWM LNB, that's a regular LNB with a SWM multiswitch.
     
  10. Grydlok

    Grydlok Icon

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    Mar 31, 2007
    I'll chime in. That original install may have been legacy and was later updated to SWM. I'm not removign 4 lines run from a ODU on a swm upgrade.
     
  11. carl6

    carl6 Moderator DBSTalk Club

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    The H21 will work with the legacy (non-SWM) dish, but you will need a b-band converter. Just run a coax from any one of the LNB outputs to your receiver (via a b-band converter).
     
  12. studechip

    studechip Godfather

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    Apr 16, 2012
    Why do you think it's not a swm lnb? That's a swm lnb model #.
     
  13. peds48

    peds48 DIRECTV A-Team DBSTalk Club

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    because there are no SWM LNBs that supersets 16 tuners
     
  14. peds48

    peds48 DIRECTV A-Team DBSTalk Club

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    Jan 10, 2008
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    Are you actually looking at the LNB itself or just the wires coming off the LNB arm of the dish
     

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