# Thread: What is my true SOUTH satellite?

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1. it's been asked and answered a bunch of times on this board.

look at this page, scroll down to the chart of the USA.

at the bottom of the chart is says "subtract" if you are left of the "0" line, and to the right "add". The blue lines mean subtract, the red lines mean add.

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## True South Sat.

I WAS JUST ABOUT TO ASK THAT QUESTION! I BOUGHT MY motorized dish BACK IN DEC 05 AND AM STILL TRYING TO GET IT GOING , I COULDNT EVEN FIND THE CORRECT SAT TO START WITH. IM IN ALBANY ,NY. AND THAT POST DID IT FOR ME.THANKS I THINK THAT THE
MAGNETIC DEVIATION WAS ALSO A PROBLEM FOR ME. I HAVE A COOLSAT 4000 PRO AND LOVE IT, I HAVE IT HOOKED TO A STATIONARY DISH RIGHT NOW SO I CAN GET ECHOSTAR 119 & 110 BUT WANT MORE. I HOPE THIS WILL HELP ME. AGAIN THANK YOU.
FLOBIE

We get this question quite often.

Basically your true south satellite is the one that has the same Longitude as your location or the closest one to your location.

For example, if you live in New York, NY, then your Longitude is 74 W. Taking a look at the satellites list here http://sadoun.com/Sat/Satellites/Satellite-List.htm you will find that SBS6 is the satellite located at 74 W. So that is your True South satellite.

Then based on that, you should consider the magnetic deviation for that location when looking at the compass to establish True South direction for your motorized dish. The Magnetic deviation for New York is +14. That means the True South direction should be equal to 180 +14 = 194 degrees on the compass.

3. This is a good link as well:
http://www.ngdc.noaa.gov/seg/geomag/...alcDeclination

you add if you are east of MS and subtract if you are west of MS..

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Here is one more site:
http://geomag.usgs.gov/models/models/

Click "Start GeoMag" to start their online calculator.
Click "Load model" and select "igrf-2005" for the current "epoch",
then Type In your Latitude / Longitude (with "-" for US).
Then click "Calculate". Look at the line starting with big "D".
It's for deviation.
For example, for my place: 37.23°, -121.82° , deviation today is 14.4889,
it's changing about -5' per year

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the magnetic declination chart says NY is at -14 am I reading this right?

6. should be plus 14 as you are east of the line.

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Originally Posted by rainman
should be plus 14 as you are east of the line.
Thank you very much, the sign of the declination number in the chart itself had me confused.

8. you are welcome. good luck on your install.

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Question/Confussion: once I find the Longitude of my location and find the Azimth and apply Magnetic deviation to Asimth I have found the "true south", Is there a reason to find / know which is the "True South satellite"?

I think I am confused because the example chosen at the very top of the this thread is for New York; that has a South Satellite at the same Longitude as New York is.

p.s.: I will be installing a T-90 dish (without a motor).
Thanks.
Last edited by mikeyounesi; 06-16-2006 at 10:13 AM.

10. with that set up you should not have to worry about your true sat.

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