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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Dish Setup Guides, Information threads and FAQs
Calculation of the focal length of an offset satellite dish antenna, Revisited
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<blockquote data-quote="scottgs" data-source="post: 1151713" data-attributes="member: 419001"><p>Channel Hopper, thanks for the response. I'll post some photos later today. </p><p></p><p>In the mean time, I went ahead and created a new spreadsheet to calculate the offset and focal length for a non-flat paraboloidal-section dish reflector. </p><p></p><p>Here is the result with my 1.2m dish dimensions:</p><p></p><p>18.8 degrees offset</p><p>1190 mm focal length</p><p></p><p>At first glance this seems plausible. But, it's not verified. I'm going to run some more tests on the excel calculator to try and verify that it's working correctly, and maybe try out the dish with a temporary LNB, and if it seems to be the correct result, I'll post the excel calculator here in case someone else needs it. </p><p></p><p>Again, if anyone can help verify, that would be most helpful. </p><p></p><p>Garret</p><p>W8BUG</p></blockquote><p></p>
[QUOTE="scottgs, post: 1151713, member: 419001"] Channel Hopper, thanks for the response. I'll post some photos later today. In the mean time, I went ahead and created a new spreadsheet to calculate the offset and focal length for a non-flat paraboloidal-section dish reflector. Here is the result with my 1.2m dish dimensions: 18.8 degrees offset 1190 mm focal length At first glance this seems plausible. But, it's not verified. I'm going to run some more tests on the excel calculator to try and verify that it's working correctly, and maybe try out the dish with a temporary LNB, and if it seems to be the correct result, I'll post the excel calculator here in case someone else needs it. Again, if anyone can help verify, that would be most helpful. Garret W8BUG [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Dish Setup Guides, Information threads and FAQs
Calculation of the focal length of an offset satellite dish antenna, Revisited
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