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EmilNJ

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Reply with quote  #1 
It's fall Solar outage time for the fall 2014.  

It seems every year some of us forget and think we have a signal issue but its the Solar outage.


For the most part in my area it starts tomorrow Sunday October 5-12th depending on which satellite it is from the morning staring EAST to late afternoon in the West. 

For others it will differ in times depending where you are located.  Also if your dish isn't fully peaked it may affect you more.

You can check the schedule here for your location to see when you will be affected.



http://www.satellite-calculations.com/Satellite/suninterference.php


Emil

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Art1

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Reply with quote  #2 
AMC 16 out @ 10am Culver City, CALIF [rofl]
Art1

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Reply with quote  #3 
And back
techjunkie02

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Reply with quote  #4 
I just happened to go outside, and saw the shadow almost perfectly over my C-band dish, this would have been G23 @ 121w at approx 4:10 pm local time here in North central Florida, it was really neat to see the shadow like that!
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Mike

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Reply with quote  #5 
ESPN 2 has been blacked out the last 2 days at this time during Highly Questionable on the DirecTV/Dish Network systems.
NFL Network Redzone was blacked out on Sunday during the Saints overtime game around this time


techjunkie02

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Reply with quote  #6 
I plugged it into that calculator that Emil posted above and sure-enough, there it was [biggrin]
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stone1150

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Reply with quote  #7 


Quote:
I just happened to go outside, and saw the shadow almost perfectly over my C-band dish



At the peak time for your area, you can use that shadow to check the alignment of your dish. Start at the east and follow it west. The shadow should hit dead center on each bird giving you a visual way to check your tracking provided of course the sun isn't blocked by cloud cover.

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10 Foot Perfect 10 dish, PE 1000 Horizon to Horizon mount, C/Ku separate feeds, Currently refining the new Manhattan DJ-1997. Still use Manhattan RS-133 receiver. 6 Foot C-Band fixed on whatever sat I care to point at. Quando Omni Flunkus Moritati  Translation...If all Else Fails Play Dead
majortom

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Reply with quote  #8 
watching the outage at 99w 4120 H 30000 (strong but 9/10 FEC) this PM, lasted ~ 5 minutes, where the predicted impact is 20 minutes for today. As long as it wasn't near 10 to 20 minutes, can't be that bad alignment wise here I guess.
About the same observed duration for 103 w Ku on the Primestar antenna.

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ricardo's geo-orbit archive: https://web.archive.org/web/20071202191450/http://www.geo-orbit.org:80/sizepgs/tuningp2.html
wejones

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Reply with quote  #9 
Quote:
Originally Posted by majortom
watching the outage at 99w 4120 H 30000 (strong but 9/10 FEC) this PM, lasted ~ 5 minutes, where the predicted impact is 20 minutes for today. As long as it wasn't near 10 to 20 minutes, can't be that bad alignment wise here I guess.

Could never decide whether I thought outage data reflected on alignment or not.  The outage is when the sun is behind the sat for you, and overwhelms the sat signal, but if your aim is off, you'd get weaker signals on the sat and the sun proportionally, so I'd think maybe the outage time isn't related to alignment in a useful way.  But one thing that would affect outage time would be how narrow the dish's beamwidth is.  If you're aimed right at the sat, and have a narrow beamwidth, then the outage might be shorter as when the sun gets some distance away, it's no longer in a narrow beamwidth.  But if the sun is not exactly behind the sat, which is usually the case, ie either above or below, then it could be that if you were aimed on the same side as the sun, the outage might be longer, and if on the side opposite the sun, the outage might be shorter. 
   Anyway, my head's swimming a bit trying to imagine how alignment affects outages.  One thing though, I don't think I've ever seen a 20 minute outage.  Seems like they've usually been around 10 minutes.
   I had an outage yesterday too, while watching Azteca on G19.  Surprised me because I thought they were pretty much over for me.  I think the sun is between 1 and 2 deg below the sats for me now. Could be because the FL is off on my dish, and I'm seeing side lobes.
majortom

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Reply with quote  #10 
I hear ya, but way I see it, poor alignment affects outage time because you don't have as much fade margin as you should, compared to if everything was dead nuts everywhere across the arc. And yes BW plays a significant role, but that is taken in to account in the outage calculators when they factor in Freq band and antenna size, so on. ~ 10/9 was the peak here, with 1 or 2 days left.
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Perfect 10 7.5' mesh Chapparal C/Ku Co-Rotor feed, Norsat 8115 CBAND, Norsat 4106A Ku Thomson Saginaw Actuator, Vbox positioner,
Home Brew Polarotor683 Servo circuit. Openbox S9, Prof7500, v4l-updatelee linux drivers installed.
ricardo's geo-orbit archive: https://web.archive.org/web/20071202191450/http://www.geo-orbit.org:80/sizepgs/tuningp2.html
EmilNJ

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Reply with quote  #11 
It's fall Solar outage time for the fall 2016.   

It seems every year some of us forget and think we have a signal issue but its the Solar outage.

For others it will differ in times depending where you are located.  Also if your dish isn't fully peaked it may affect you more.

You can check the schedule here for your location to see when you will be affected.



http://www.satellite-calculations.com/Satellite/suninterference.php

Emil


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DiamondJim

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Reply with quote  #12 
Happened to me during a ballgame on Friday. It took me about 3 minutes or so to realize what happened. Thanks for the reminder.


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wejones

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Reply with quote  #13 
  i guess the peak is over for most of the US, except for those above 46 deg lat.
But yeah, I had an unusual solar outage yesterday.  I was watching one of the CTV channels at 107.3.  I had tuned to that channel on Saturday, and was getting a strong signal of around 15 dB SNR.  After watching without incident for over an hour, at some time between 2 and 3 PM (not sure exactly) I started seeing the video break up.  I looked at Crazyscan, and noticed that the SNR was way down, somewhere in the 9 to 11 range if I remember right.  It was breaking up enough that PotPlayer kept freezing, and I had to switch to another player.  This was probably around a half hour before I should have seen a solar outage on that sat, and at the time, we were in the midst of a foggy drizzle of rain, which lasted most of the day.  After a while, the SNR came back up to somewhere around 12 dB, however approximately at the actual time of the solar outage, the SNR went down again, this time down to about 6 or below, and I lost lock on the sat.  Again, after a while the SNR came back, again up to about 11 or maybe 12. Then, if I remember right, it went down a third time, down to the 9 or 10 range then came back, initially up to 14 or so, eventually up to around 14.5. I could then view the rest of the NFL game with no breakups using PotPlayer.
   The strange thing is that I usually associate solar outages with an 8-10 minute outage period, not 3 separate periods, so I'm having a hard time explaining why it seemed to occur 3 times.  The only thing that seems like a possible explanation is side lobes.  Ie the sun's signal entering via not only the main lobe but also via side lobes.  But I have never seen that happen before with this setup, even though I have seen solar outages.  Also, although I've observed side lobes on other dishes, I've never noticed them on this dish, and with the other dishes, I think it was only on Ku if I remember right.
   So this was an unusual occurrance.  I was wondering if it might have been caused by the mist like rain?  Ie, the sun signal being diffused by the mist and bent so that it strikes the dish at a different angle, sort of like a rain-bow effect?  Also, I guess it's possible that since I'm surrounded by trees, that the dry leaves left on the trees got wet and blocked the signal more than when dry?  Although that sat wasn't completely blocked by trees, only partially.
   Anyway, I'm not sure what caused the problem, but I found it strange that i seemed to get a triple solar outage on the same sat.  Messed up my NFL game from late 2nd quarter to mid 3rd quarter if I remember right.  I wish that I had written down the time vs SNR numbers to document it better. 



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