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Parabolic Dishes Page 3 - calculation in the video clip

 
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Systematicguy
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PostPosted: Thu Mar 01, 2012 9:47 am    Post subject: Parabolic Dishes Page 3 - calculation in the video clip Reply with quote

Iíve been trying to work through the antenna gain calculation thatís incorporated in the video clip on Page 3 of Parabolic Dishes. I canít get anywhere near the quoted 1630/32dB answer that is stated in the clip. I can however get to 16738/42dBs consistently, which is a magnitude of 10 out from your answer. Iíve checked the gain calculation using a simple mental calculation that I sometimes use and I get 40dB using the 18GHz RF and 0.5m dish diameter doing it quickly, which is close to my 42dB answer. Am I doing something wrong? I'd appreciate it if someone can work through the video example and provide me with the full math of the answer.
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