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SATCOM Engineering Ref. (click here)
Lots of reference data regarding satellite telecom, antennas and measurements. Includes several Excel RF calculator tools.

Download a free SMW Satcom software program for your computer here: http://smwlink.com.sitebuilder.loopia.com  - Calculator for Windows - This is a great little program which includes G/T Calculations, Satellite Antenna Alignment using your lat. & long., C/N, System Noise Figure, NF to Noise Temperature and Antenna Gain Calculations. This is a 1.5 MB zipped file which will install to Windows95/98/XP/7 operating systems.

Online satellite link budget calculator: Satellite Link Budget Calculator  

Excellent online RF engineering resources are at these links:




Link to: Microwave Spread Sheets and Excel Calculator Docs. - Lots of RF .xls calculators you won't likely ever need to use but some can be very useful for RF link work.

Download: RF Units Converter Program.exe - This is a very small program which downloads quickly and well worth having if you work with RF voltage and power levels.

Intelsat COB - Intelsat Center Of Box Ephemeris Data: Find your region (Afghan uses Indian Ocean Region), use the drop down menu to go to your bird and then click the "view" box to see predicted COB data.

Telesat COB - Anik F1, Anik F1R, Anik F2, Anik F3, Nimiq 1, Nimiq 2, Nimiq 4, Telstar 11N, Telstar 12, Telstar 14, Telstar 18
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