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Sun interference message

Discussion in 'DIRECTV General Discussion' started by gilviv, Mar 6, 2013.

  1. Davenlr

    Davenlr Geek til I die

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    Yea, that javascript was using my computer clock settings to calculate the time, not the location I entered, hence the 2 hour difference, sorry.
     
  2. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    Dec 9, 2006
    I was fighting the same thing here. :lol:

    FWIW I've been watching my local NBC during the times that 103 "should be" having this problem this week and haven't seen the message. :shrug:
     
  3. cwtech

    cwtech Mentor

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    http://www.satellite-calculations.com/

    here is another site were you can get information on this,, they have a link there called sun calculator and also more information on how/what takes effect
     
  4. litzdog911

    litzdog911 Well-Known Member

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    Yep. See the link in my signature below. It's a very useful time to determine optimal dish locations.
     
  5. I WANT MORE

    I WANT MORE CowboySooner

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    Northern plains
    Happened to me on HLN while enjoying the Jodi Arias trial.
     
  6. RBTO

    RBTO Legend

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    The sun outage can happen anywhere in DTS system including its providers, since all use geosynchronous satellites located in the Clarke belt. The outage-predictor site won't help predict those because no one (outside of DTV) knows what links are susceptible at any given time. That site does, however, allow individuals to determine when their own receiver is prone to a sun outage. It's a great way to see if your dish is shadowed since the sun's location will be very close to that of the satellite if the data you provide is correct.

    Someone mentioned something about power and rain-fade. That's kind of apples and oranges for rain fade and a sun outage. Rain fade is due to the lack of signal. Sun outages are caused by the background radiation (in this case, microwave) blinding the receiver to the satellite's relatively lower power. Raising the satellite power could overcome a sun outage, but the amount the power would need to be raised is considerably more than that to prevent rain fade. The sun is a powerful transmitter at a whole lot of frequencies. If you look at a satellite signal with rain fade, the signal drops toward the noise floor. With a sun-outage, the noise floor comes up, past the satellite signal and swallows it.
     
  7. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    I think I was the "someone", and while you may think apples and oranges, they both come out of the same CNR basket. ;)
     
  8. RBTO

    RBTO Legend

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    Sorry if I offended!
    I was referring to cause and effect. You're quite correct. They're both signal-to-noise issues, but one is due to a loss of signal and the other is due to something overpowering the signal. Just saying.
     
  9. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    Wasn't offended.
    I was thinking about saying what you had earlier.

    Rainfade is a drop in signal, while "sun fade" is a rise of the noise power.
     
  10. Davenlr

    Davenlr Geek til I die

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    I dont think he was offended. You would know it if he was Im sure. You made a valid point about signal loss vs noise increase. Since the meters read data bit errors I believe, both would affect the meter readings the same.

    It is useful, if you know the receiver site (Castle Rock, Co) and the satellite the feed comes from (lyngsat has most of them), then you can calculate the time a channel (headline news for example) will drop out at the DirecTv receive site, and see if it coincides with the time the slide is onscreen.
     
  11. alnielsen

    alnielsen Godfather

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    If the problem was due to the C band (?) uplink/downlink of the signal, wouldn't it happen multiple times? That one signal is bounced 4 times before it get's to your receiver. And the times would be staggered throughout the day, as the signals originate from different satellites.
     
  12. Davenlr

    Davenlr Geek til I die

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    It does. I have seen the slide on DirecTv (and Comcast), and its only for channels on one satellite, other channels are fine. Since most cable channels are co-located on three or four satellites, all in a rather close span of sky, it might appear to occur all at once, but never are all the DirecTv or Comcast channels out at the same time.
     
  13. HoTat2

    HoTat2 Hall Of Fame

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    Los...
    Since you've made reference to "Castle Rock" a number of times in this thread, just to note I think that's now behind the times :). AIUI, the primary station today for reception and uplinking of all national or CONUS programming for DIRECTV USA is the LA Broadcast Center (LABC) here in Marina Del Ray, CA. as "Uplink #1." with CR serving as the backup as "Uplink #2" should the LABC ever be disabled (major earthquake or what have you).

    However CR is the primary hub for collection and distribution of the majority of LiL programming I understand.
     
  14. fleckrj

    fleckrj Icon

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    I wonder as we approach the peak of sunspot activity whether the sun outages will be a little longer over the next few years than they have been since about 2004? Still, the outages are in single digit minutes for a few days in the spring and a few days in the fall, but from about 2004 through 2011 we were on the bottom half of the sunspot activity curve, The next peak will be in 2014, but it will be about 2017 before the activity goes back to being as low as it was between 2004 and 2011. I am not an expert, but I would guess is the outages might occur on two or three more days in the spring and fall and last two or three minutes longer on the days on which they occur in 2014 and 2015.
     
  15. Davenlr

    Davenlr Geek til I die

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    OK. I wasnt aware they had switched over to LA. Appreciate the info.
     
  16. makaiguy

    makaiguy Icon

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    Aiken, SC
    FWIW - got the message yesterday at the beginning of the 1:00 PM (EST) Larry Sanders showing on Reelz. It started with a "No signal" or similar wording in blue at the top of the screen on a dark background, with no error number. It was NOT the normal white error message with error number one sees at the bottom of the screen when a sat signal is not found by the STB. It was followed within a few seconds by the full sun blockage explanation screen in English and Spanish. Lasted about 3 minutes.

    Those so inclined can figure out what was being sunblocked then. I am located in Aiken SC.
     

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