Trying to point true south

[dvbfan2005]

I have HH100, Fortec 80cm and Fortec receiver.

My long is 92.19
My lat is 38.98

The Sat that I should be lookng for is at 92 W (BrasilSat) but since this is C-band only, I can't use this correct?

So, I have either 91'W (Galaxy 11) or 93'W (Intelsat Americas 6) as my
nearest south. But, I don't understand this magnetic declination thing given the map on Sadoun web site.

http://www.sadoun.com/Sat/Installati...ion-Angles.htm

Should I add or minus and what is the degree should I look for?
ie? azimuth

Thank you.

[DruzeTito]

each line on the chart represents 1 degree of correction for the compass. If you are the the left of the line you would subtract from 180, if right .. add.

[dvbfan2005]

Originally Posted by DruzeTito

each line on the chart represents 1 degree of correction for the compass. If you are the the left of the line you would subtract from 180, if right .. add.

See the red dot in Iowa state, that's my city:
http://i4.photobucket.com/albums/y14...an/mag-map.jpg

If I am just about 1 over but not the 2nd blue line to the left of darker '0' line, do just I just subtract 1 instead of 2 ? (There is no need to round up?)

Also, I wonder if use the NOAA web site to calc the actual degree at
magnetic declination, will this work pretty as the same?
http://www.ngdc.noaa.gov/seg/geomag/...alcDeclination

I entered my LAT and LONG info and click Compute Declination, it came back with these results:

Declination = 1° 18' E changing by 0° 7' W/year

From where I am, it does seems that I need to minus 1 degree from my compass reading at 180 and I should be looking directly at my true south?

[DruzeTito]

if you are talking about the difference of a degree or two, there no way to be that accurate. Calculated the approximate compass true south is just for reference. You will find true south perfectly when you track the arc correctly and use the signal/quality bars as a reference.