DIRECTV Satellite Discussion SKYM-1 (Ku-79W) @79W

Discussion in 'DIRECTV General Discussion' started by doctor j, Apr 15, 2015.

  1. Aug 17, 2015 #41 of 100
    HoTat2

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    Hey thanks, and welcome to the forum;

    Finally someone who can help explain how the SKYMex service works.

    So is there a new twin LNB and perhaps dish reflector for receiving both 58 and 79W?

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  2. Aug 21, 2015 #42 of 100
    egakagoc2xi

    egakagoc2xi Cool Member

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  3. Aug 21, 2015 #43 of 100
    HoTat2

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    Thanks for posting this, but aren't the LNBs and dish pictured actually for the Shaw Direct satellite service in Canada at 107.3 and 111.1W not the SKYMex one at 58.1 and 78.8W?

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  4. Aug 22, 2015 #44 of 100
    P Smith

    P Smith Mr. FixAnything

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    that's right, the block have lnbfs are to close to pick two sats 20° apart!
     
  5. Aug 22, 2015 #45 of 100
    HoTat2

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    The dish tilt in the photo is also the wrong way and the elevation much too low as well for SKY Mexico from locations in Mexico, LATAM, and parts of the Caribbean.

    You can tell that dish location is somewhere up in east or northeast Canada aimed at 107 and 111.1W for the Shaw Direct service.

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  6. Aug 23, 2015 #46 of 100
    P Smith

    P Smith Mr. FixAnything

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    We done with the fake dish and LNBF !

    Give us a picture of REAL one !!!
     
  7. Aug 25, 2015 #47 of 100
    Ivanem23

    Ivanem23 New Member

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    Hello left antenna sky 78 ° next you can see which points to 58




    [​IMG]


    Video: https://vid.me/iSYv
     
  8. Aug 25, 2015 #48 of 100
    HoTat2

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    Aw... finally we get a look at it. A two dish solution I see. Thanks ...

    Certainly not the most convenient method instead of a single dish twin LNBF one, but perhaps is only temporary until a single dish solution is available.

    I take it the LNBF on the new HD dish is a standard 11.7-12.2 GHz linear one without any R-band capabilty for now at least.

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  9. Aug 25, 2015 #49 of 100
    Ivanem23

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    [​IMG]

    Sky at this migrating everything for skymx-1 all this is happening first in Mexico City customers who want the new channel package must call for the change of antenna which will see new HD and SD channels. The postedas images are courtesy of network54.
     
  10. Aug 25, 2015 #50 of 100
    HoTat2

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    Oh ... so it really isn't a two dish solution as 58W is eventually going away?

    All HD and SD is being migrated over to SKYMex-1 at 79W?

    I also see that the new reflector is elliptical which I suppose will allow for a new twin LNBF to be swapped in when the future KU-76W (SKYMex-2?) is deployed at 76W.

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  11. Aug 26, 2015 #51 of 100
    P Smith

    P Smith Mr. FixAnything

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    I would imagine twin lnbf for 79 @ 76W, no way to make one reflector's dish for two sats 20° apart!
     
  12. Aug 26, 2015 #52 of 100
    HoTat2

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    Yeah that's what I meant ...

    In fact a future linear twin LNBF for receiving from 76 and 79W could be very similar in design to the Shaw Direct ones pictured earlier.

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  13. Aug 26, 2015 #53 of 100
    slice1900

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    The Slimline with 5LNB receives 99/101/103/110/119 - that's a 20* spread between 99 and 119...
     
  14. Aug 26, 2015 #54 of 100
    P Smith

    P Smith Mr. FixAnything

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    It's more likely 101-110-119, eg 18°.
     
  15. Aug 26, 2015 #55 of 100
    slice1900

    slice1900 Well-Known Member

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    No, it also receives 99 & 103, so it is a full 20*.
     
  16. Aug 26, 2015 #56 of 100
    Ivanem23

    Ivanem23 New Member

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    Intelsat 21 (58° w) Sky Mexico position

    [​IMG]

    SkyMX1 (78° W) new satellite Sky position

    [​IMG]
     
  17. Aug 26, 2015 #57 of 100
    James Long

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    It is good to note the reception area in question ... where in the US we have DISH and DirecTV satellites in a maximum "18 degree" or "20 degree" arc that is not the full story. Most of our dishes are designed for use anywhere in the contiguous US. The difference in apparent spacing between the satellites is different in Bangor, Maine vs Miami, Florida or Seattle, Washington vs San Diego, California. The closer one gets to the equator the further apart the satellites appear to be.

    Engineers have managed to design dishes that can pick up "18 degree" spaced DBS satellites, relying on the higher power and wider spacing to allow one dish to be used nationally (with the differences between dishes being what satellites are needed, not what area of the country one is in).

    Take a look at the Azimuth difference on the two images above ... the satellites are 20 degrees apart when viewed from the center of the earth. Quite a bit more when viewed from the surface. Which would make a "single dish" reception of these two satellites from Columbia a bit more challenging.
     
  18. Aug 27, 2015 #58 of 100
    slice1900

    slice1900 Well-Known Member

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  19. Aug 27, 2015 #59 of 100
    James Long

    James Long Ready for Uplink! Staff Member Super Moderator DBSTalk Club

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    Not quite. Picking a random middle of the US city (Kansas City. MO) it is azimuth 227.3 to 129 and 147.5 to 72.7 - a spread of about 80 degrees. The numbers above for seeing 58 and 78 from Bogata are a spread of 120 degrees azimuth. While it would be possible to design a dish that would do that spread the outside LNBs would need to be further apart than the one you linked. Certainly not a twin LNB. :D
     
  20. Aug 27, 2015 #60 of 100
    HoTat2

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    Perhaps true, though really an academic study here I think ....

    As was stated by the earlier poster, SKY Mexico appears to be leaving 58W for 76 and 79W where ultimately a twin linear LNBF similar to Shaw Direct's current LNBF for 107 and 111W will likely be used with the LNBs placed 1° closer.


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