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DIRECTV Satellite Discussion D-14 @99W

Discussion in 'DIRECTV General Discussion' started by Sixto, Jun 17, 2010.

  1. Jun 11, 2013 #681 of 3078
    HoTat2

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    I think the main question here is if the frequency response of the Ka band feedhorns at 99 and 103 extend, or be modified to extend in a new LNB, slightly below the Ka-lo band at 18.3-18.8 GHz to accept the RDBS band at 17.3-17.7 GHz as well?
     
  2. Jun 11, 2013 #682 of 3078
    P Smith

    P Smith Mr. FixAnything

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    we already has the knowledge how FPs controlling ... I posted the DiSEqC-like cmds
     
  3. Jun 11, 2013 #683 of 3078
    David Ortiz

    David Ortiz Save the Clock Tower!! DBSTalk Club

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    DIRECTV has a patent for an ODU using a frequency selective surface that would reflect the Ku signal to a feedhorn on the dish arm, and allow the Ka signal to pass through this surface to the feedhorn at the end of the arm. The patent description indicates that a Ka/Ku feedhorn isn't possible due to the wide range of frequencies. It does say that moving the Ku feedhorn would allow "improved reception efficiency for all the feedhorns". This change would be necessary for receiving Ka and Ku signals from 101 and the patent description doesn't specifically discuss the capabilities of the current dish with regard to Reverse band frequencies.
     
  4. Jun 11, 2013 #684 of 3078
    HoTat2

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    P. Smith, I recall you once posting the DiSEqC commands for switching a BBC, but not for the flexports.

    Maybe I missed it, got a link or can post them again?
     
  5. Jun 11, 2013 #685 of 3078
    P Smith

    P Smith Mr. FixAnything

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    I don't have it ... thought it could be found if need ... something like 'e101' 'e102' ... but the darn cmd must be send constantly, like 22 KHz tone
     
  6. Jun 11, 2013 #686 of 3078
    cypherx

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    And here is that patent:
    http://www.google.com/patents/US7982687

    Very interesting stuff!
     
  7. Jun 11, 2013 #687 of 3078
    HoTat2

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    Yes it is;

    But as a viable way to receive Ka band signals separately from simultaneous Ku ones at 101.

    When I first saw that patent at the time I thought at first it would furnish some insights into what DIRECTV had in planning for RDBS band reception from 99 and 103, but it wasn't unfortunately.
     
  8. Jun 15, 2013 #688 of 3078
    harsh

    harsh Beware the Attack Basset

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    It is starting to look like all the discussion of switchgear, software and even the RDBS payload is probably moot with respect to DIRECTV 14 and how it will impact the usable bandwidth for residential subscribers.
     
  9. Jun 15, 2013 #689 of 3078
    HoTat2

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    Why?
     
  10. Jun 15, 2013 #690 of 3078
    P Smith

    P Smith Mr. FixAnything

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    I think it's because DTV didn't make any clear statements of using it, of new switchgear, dishes, LNBF, freq stacks ... total blackout, like they doing preliminary work, but not anything to agile us, customers, installers and forum's posters ;)
     
  11. Jun 16, 2013 #691 of 3078
    inkahauts

    inkahauts Well-Known Member

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    :lol:
     
  12. Jun 16, 2013 #692 of 3078
    harsh

    harsh Beware the Attack Basset

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    How?
     
  13. Jun 16, 2013 #693 of 3078
    HoTat2

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    The possible "how" is what we're discussing here. But what I meant is "why" is it your contention that the way RDBS reception may be implemented on the subscriber end is a "moot" point now?

    You mean DIRECTV made all this pioneering effort and financial investment in earth and space equipment for RDBS transmission over the years, just to do an abrupt about-face and scrap it all at this point?

    What proof do you have of that?
     
  14. Jun 16, 2013 #694 of 3078
    P Smith

    P Smith Mr. FixAnything

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    the 'proof' will be real MOOT point :D
     
  15. Jun 16, 2013 #695 of 3078
    James Long

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

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    RDBS will be used ... but as a new band requiring a new LNB any use will require upgrading each and every subscriber that will need to receive the RDBS signal. It isn't as easy as launching the satellite and "poof" millions of existing setups can already receive the new channels being placed on RDBS. Unless every HD subscriber is upgraded the use will be limited to those who have been upgraded.
     
  16. Jun 16, 2013 #696 of 3078
    HarleyD

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    What are the chances that the RDBS payload could be lit up at a later time?

    If the plans for RDBS entail more bandwidth than just the D14 payload can provide maybe it's being staged.

    Get D14 into its' orbital slot and the the RDBS payload validated durint IOT and let it idle for now. Follow it up with more of the same on D15 later in the year which would then effectively double the RDBS bandwidth in the air and ready to use. Place two birds with fully functional RDBS hardware by the end of 2014 and then roll out hardware upgrades to make use of it all starting in 2015
     
  17. Jun 16, 2013 #697 of 3078
    damondlt

    damondlt New Member

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    Is there and up to date page with the specs and the Launch date?
     
  18. Jun 16, 2013 #698 of 3078
    HoTat2

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    No site that I know of, just pretty much the official FCC filings right now.

    Satellite construction commencement date: 4/9/10
    Completion date: 1/1/14
    Estimated Launch Window: 1/15/14 - 3/1/14
    Estimated date for placement into service: 5/1/14
     
  19. Jun 16, 2013 #699 of 3078
    longrider

    longrider Well-Known Member DBSTalk Club

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    I am no expert, but can anyone explain why it takes over 3 years to physically build the satellite? I could see 3 years if that included design and engineering, but just to build it??
     
  20. Jun 17, 2013 #700 of 3078
    P Smith

    P Smith Mr. FixAnything

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    it does both - design is unique for each sat contrary to a car; adding to that there is no manufacturing line for sats
     

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