DIRECTV Satellite Discussion DLA-1 @95W

Discussion in 'DIRECTV General Discussion' started by egakagoc2xi, Aug 18, 2014.

  1. Aug 18, 2014 #1 of 214
    egakagoc2xi

    egakagoc2xi Cool Member

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    Satellite DLA-1 Intelsat 30 / DIRECTV Latin America 1

    Finally, the FCC has granted authorization. The launch date has been confirmed for Octuber 16th and here are some pictures...

    [​IMG]
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    [​IMG]

    Regards,

    PS: Does someone know what CATR and CGMOI stand for?
     
  2. Aug 18, 2014 #2 of 214
    damondlt

    damondlt New Member

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    What are we looking at? DIRECTV14?
    Do we have a link?
     
  3. Aug 18, 2014 #3 of 214
    studechip

    studechip Godfather

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  4. Aug 18, 2014 #4 of 214
    HoTat2

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    CATR --- SS/L's "Compact Antenna Test Range"

    CGMOI --- SS/L's "Center of Gravity Moment Of Inertia" process facility.

    Not sure of the nature or necessity of the testing or process for the later.
     
  5. Aug 18, 2014 #5 of 214
    HoTat2

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    And maybe someone else can answer, why the FCC filed data and other media releases for ISDLA1 & 2 keep listing only 72 Ku transponders available for DLA service on each bird, when the count is actually 80? (80 + 1 if the special TCN channel is included).

    Totals for Ku band payload:

    32 24Mhz Pan-Regional tps.
    48 36MHz Regional tps.
    1 8MHz TCN tp.
    -------------------------------
    80 (81)

    Why are the oft- quoted Ku TPN listings 8 short this way? :confused:
     
  6. Aug 18, 2014 #6 of 214
    egakagoc2xi

    egakagoc2xi Cool Member

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    Jejeje, I have 2 years with the same doubt xD
     
  7. Aug 19, 2014 #7 of 214
    Gary Toma

    Gary Toma UNIX

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    This thread is dedicated to Directv Satellite DLA-1

    which also referred to as: Intelsat 30 / Directv Latin America -1 / DLA-1 / IS30 / ISDLA1


    The beam footprints for DLA-1 are available in Post #19 of the Beam Footprint Library thread in the Tips & Resources Forum.

    At present the launch date is scheduled for October 16, 2014. It will have a profound impact for the Directv Panamericana Division which provides service to Argentina, Chile, Colombia, Ecuador, Peru, Uruguay and Venezuela. It also includes El Caribe entities Aruba and Curacao, Barbados, Trinidad and Tobago and Caribe Regional. Puerto Rico service has transitioned to US Domestic satellite resources.

    This satellite will be followed in 2015 by IS31 / DLA-2, a second new satellite dedicated to Directv Latin America.

    Both DLA-1 and DLA-2 will be co-located with the G3C satellite at 95 degrees West.
     
  8. Aug 19, 2014 #8 of 214
    bcltoys

    bcltoys Cool Member

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    Where will this bird be placed.
     
  9. Aug 19, 2014 #9 of 214
    bcltoys

    bcltoys Cool Member

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    Woop's I see 95 west. sorry
     
  10. Aug 19, 2014 #10 of 214
    HoTat2

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    Gary, do you know how the EL Caribe entities receive HD?

    Or did they ever receive any?

    With HD having been long removed from Beam PR, do they only receive the handful (six presently) of HD channels on Beam Oeste?
     
  11. Aug 19, 2014 #11 of 214
    Gary Toma

    Gary Toma UNIX

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    As I recall, the El Caribe area (not to include Puerto Rico) receives only those 6 HD channels on Beam Oeste. They do not receive Beam Sur, which could provide an additional 36 HD channels. El Caribe also receives only FOX, ABC and NBC and those only in SD.

    Last time I looked into this, they received a CBS feed via WSEE (from Erie, PA, would you believe) also in SD. So you would have a weather person in the studio in Erie, PA, dressed in a short sleeved shirt, delivering the Caribbean weather forecast. After the broadcast, the weather person drives home through two feet of snow...

    Just checked and cannot find WSEE in the current Latin TPN Map. It would be great to hear from a local on this subject :)
     
  12. Aug 19, 2014 #12 of 214
    woj027

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    Great add for the Latin America fleet!


    Sent from my iPhone using DBSTalk
     
  13. Aug 20, 2014 #13 of 214
    LameLefty

    LameLefty I used to be a rocket scientist

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    Determining the spacecraft Cg and moment of inertia and verifying that, as built, these characteristics fall within the design specification, are necessary for a number of reasons. First, it ensures that the launch vehicle will be able to maintain attitude control and stability during launch. Second, it ensures that once on-orbit, the spacecraft itself will be able to maintain attitude control during orbital maneuvers and operational activities.

    Measurements can be done any number of ways - Cg can be figured with straightforward scales and measurements of the vehicle dimensions and simply determining the balance point. Moment of inertia is a somewhat more complicated concept - it boils down to the torque necessary to impart angular acceleration. This is important to know to calibrate control systems as well as to verify launch vehicle stability. Determining moment of inertia mathematically can be messy but doing it experimentally is pretty easy. http://en.wikipedia.org/wiki/Moment_of_inertia#Calculating_moment_of_inertia_about_an_axis

    The catch is that the axis about with you're measuring may be arbitrary and may not line up with the physical axes of of the spacecraft. That's why the Cg measurements are so important.
     
  14. Aug 27, 2014 #14 of 214
    doctor j

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    Haven't looked at the data but "spare" transponders interfer with the count.
    Also Functional Transponders require UPLINK capability and thus can affect "count"

    Doctor j
     
  15. Aug 31, 2014 #15 of 214
    Luispr14

    Luispr14 Cool Member

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    Hi Gary,since October 8 2013 the signal from WSEE/CBS is out for El Caribe area and also from Puerto Rico with at least for now no news as to when will get back the CBS feed either from WSEE or other CBS affiliate
     
  16. Sep 20, 2014 #16 of 214
    Gary Toma

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    A new Latin TPN Map has been posted in the Transponder Maps thread. For the first time, we have some records of the coming PAN Networks 3 and 4, which will be provided by DLA-1. A projected, new, Network Decoder is provided as a first glimpse of the coming new capabilities.
     
  17. Sep 20, 2014 #17 of 214
    egakagoc2xi

    egakagoc2xi Cool Member

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    Intelsat 30 / DLA-1: the Journey Begins
    [​IMG]By Jon Harborne, Senior Manager, Intelsat Spacecraft Program Office
    First in a series from Intelsat team members overseeing the launch of Intelsat 30, which is hosting the DLA-1 payload for DirecTV Latin America.
    I am pleased to report that Intelsat 30 arrived safe and sound at the launch base in French Guiana on Wednesday, 10 September. It was transported from SSL’s manufacturing facility in Palo Alto, California by an Antonov-124, a Ukrainian plane with a large enough cargo bay to carry the satellite inside its shipping container (pictured).
    Currently, the satellite is scheduled to launch on 16 October. Between now and then, there are many tasks to be completed to ensure the satellite is ready, literally, for lift-off. The first twelve days are taken up with checking that the spacecraft still performs flawlessly after its flight from California. To do this, we’ll repeat the electrical functional tests that were conducted before the satellite was shipped, and also check that the propulsion system does not leak.
    During the next seven days, Intelsat 30 will go to the fueling facility where its tanks will be filled with fuel and oxidizer. This is a hazardous operation with toxic chemicals and SSL’s technicians are required to wear SCAPE suits to protect themselves during this process.
    Intelsat 30 is scheduled to be launched on an Ariane V launch vehicle, along with another satellite, Arsat 1. A dual launch such as this brings with it some specific considerations, which I’ll explain in my next post.

    Source: http://www.intelsat.com/blog/intelsat-launches-blog/intelsat-30-dla-1-the-journey-begins
     
  18. Sep 20, 2014 #18 of 214
    egakagoc2xi

    egakagoc2xi Cool Member

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    Preparations Continue for the Intelsat 30/DLA-1 Launch
    [​IMG]By Jon Harborne, Senior Manager, Intelsat Spacecraft Program Office
    Second in a series from Intelsat team members overseeing the launch of Intelsat 30, which is hosting the DLA-1 payload for DirecTV Latin America.
    Things here in French Guiana are proceeding as planned. Intelsat 30/DLA-1 (IS-30/DLA-1) has successfully completed electrical testing, the propulsion system checks are in process and preparation activities are underway for filling the propellant tanks.
    Our co-passenger Arsat-1 has completed its electrical tests, and is on track for its fueling operations, and the launch vehicle is undergoing system validation checks in the BIL (French acronym for Batiment d’Intégration Lanceur).
    After the tanks of IS-30/DLA-1 have been loaded with fuel and oxidizer, the focus of the campaign will shift to integration of the satellite and its co-passenger, Arsat-1, onto the Ariane V launch vehicle. IS-30/DLA-1 will ride in the upper position on the launch vehicle, separated from Arsat-1 by a structure known by the French acronym, SYLDA (Système de Lancement Double Ariane).
    The integration will take place in a tall building known as the BAF (French acronym for Final Assembly Building). First, IS-30/DLA-1 will be attached on top of the SYLDA, then the rocket fairing will be placed over the satellite and SYLDA. It may sound simple, but this series of steps takes five days to complete and must be performed very carefully with cross-checks at every stage.
    After the integration of IS-30/DLA-1 is complete, the satellite and its co-passenger will be attached to the launch vehicle. Arsat-1 will be attached first, and then the composite of IS-30/DLA-1, the SYLDA and fairing will be integrated on top. This will bring us up to a week before the launch date.
    During the final days prior to the launch, we will be busy with a launch day “dress rehearsal,” transfer of the rocket from the BAF to the launch pad, final preparations, fuelling of the rocket and then, the launch itself!
    Pictured, Jon in front of the satellite as it was being unloaded at Cayenne Airport.

    Source: http://www.intelsat.com/blog/intelsat-launches-blog/preparations-continue-for-the-intelsat-30dla-1-launch/
     
  19. Sep 29, 2014 #19 of 214
    veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    Some things never change.
    The High Bays at SSL, Palo Alto, look exactly the same as they did 20 years ago.
    Only the SATs look different.

    BTW: they had to change their test range because they used to radiate the traffic on 101.
    They now "bounce" off the walls of the high bay for their "compact" test range, and I bet the rush the hour traffic is healthier for it. :rolling:
     
  20. Sep 29, 2014 #20 of 214
    HoTat2

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    But I wonder how they do it, since I imagine any such antenna test range on earth would really be "compact" compared to the actual distances involved in earth-to-GSO orbits?

    Do they take beam measurements at various points in the CATR downrange from the antennas under test and then through what I guess is mathematical modeling, extrapolate how the footprint will look on earth over 23, 000 mi. away?
     

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