Sun outage, or used for scoping out locations for a dish
http://www.satellite-calculations.com/Satellite/suninterference.php
http://www.satellite-calculations.com/Satellite/suninterference.php
That time of Year
- Thread starter FaT Air
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Just finished re-aiming the 83e to 103. Just placed the shadow of the feed in line with the arm, (bottom center of dish) twisted the LNB, and viola! (elevation is within .3° of 97, where it was, so not going to tweak any more until I can bring a TV out with me. - Yeah I could now but call me LAZY - working good as is)
The chart seems a bit confusing.. Someone what to explain how i calculate.. Does the outage last all day, 20 minutes?
I use an app called Sun Surveyor (lite) to precisely calculate the sun position for my exact longitude/latitude to the second. Use the DishPointer app to provide satellite coordinates for my longitude/latitude.
The length of the outage increases as the sun angle aligns directly behind the satellite positions. The strength of the sun RF noise decreases the satellite signal to noise ratio until the receiver is no longer able to correct the data to produce a decoded service.
Once the sun passes from behind the satellite, the satellite signal to noise ratio increases and receiver is able to apply the FEC and decode the service. The larger the reflector, the shorter the outage. The outage could last from a few minutes to 10-15 minutes. All depending on the date, size of reflector, feed/receiver performance.
The length of the outage increases as the sun angle aligns directly behind the satellite positions. The strength of the sun RF noise decreases the satellite signal to noise ratio until the receiver is no longer able to correct the data to produce a decoded service.
Once the sun passes from behind the satellite, the satellite signal to noise ratio increases and receiver is able to apply the FEC and decode the service. The larger the reflector, the shorter the outage. The outage could last from a few minutes to 10-15 minutes. All depending on the date, size of reflector, feed/receiver performance.
use the map to input your location. Select band (C Ku) set dish size. Select the satellite. The columns to look at are the (Local Time columns)
Start Interference - - End Interference - - Peak Interference
Peak for me was few days ago, South of me latatudes now in or nearer the peak.
Start Interference - - End Interference - - Peak Interference
Peak for me was few days ago, South of me latatudes now in or nearer the peak.
I must be a "real Satellite Guy" then. Wednesday this past week lost signal on both the FTA and DN dishes. Thought it might possibly be sun outage but when I went to check on it I discovered the woodshed roof they are mounted on was starting to buckle under the weight of all the snow! Got out the roof rake and removed the snow, then first had to move the DN pizza dish so the wife had her channels. Moved it to a post on the porch, pointed it to where I thought it looked good, dug out the old Visionsat and was going to set up on the porch to aim it and decided what the heck, plug the DN receiver back in and see if you get anything. And I had it dead on! Which was great as it was about 15 degrees outside. Checked signal for both 110 and 119 and tightened it in place. Later that day I jacked the roof back up and put a post under it. Out of curiosity tried the FTA receiver and had that back too!Only a "real Satellite Guy" can go out and align a dish like that without any sat finder type of equipment along!
When I had directv back in 99 I experienced solar outage one time in spring. All of sudden my digital picture went to black and white then black screen called directv asked what was going on?
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