Focal Point Length Calculator

[neljtorres]

Thanks to my friend PotroLoco for this I have used it and it works great for prime focus dishes . Here is the attachment

 

[Inno]

Looks simple enough. Does that measurement take you to the plastic cover over the throat of the LNB?

 

[neljtorres]

Looks simple enough. Does that measurement take you to the plastic cover over the throat of the LNB?

Yes

 

[Skjellyfetti]

That's nice, pretty much the same as "diameter squared divided by 16 times depth = focal length". Also you may want to give this program a try: Parabola Calculator version 2.0

 

[B.J.]

Thanks to my friend PotroLoco for this I have used it and it works great for offset dishes . Here is the attachment

I may be missing something, but I don't think that there is any way that this can work for offset dishes. This is a calculator for prime focus dishes.

 

[neljtorres]

I may be missing something, but I don't think that there is any way that this can work for offset dishes. This is a calculator for prime focus dishes.

Sorry I fixed it wrong word thanks it's for the prime focus

 

[neljtorres]

That's nice, pretty much the same as "diameter squared divided by 16 times depth = focal length". Also you may want to give this program a try: Parabola Calculator version 2.0

Thanks Good Program!

 

[Skjellyfetti]

Yes, using the WiFi calculations will allow you to get the off set focal point, and your welcome.

 

[Inno]

How much does the Freq. affect the focal length? What I mean is, for Ku band you are using a range of frequencies, how do you determine the proper frequency to input into the calculator? Take the center freq?

Edit: I think I answered that myself. I downloaded the Parabola Calculator 2.0 and punched in a few different frequencies and it did not affect the focal point but it did affect the efficiency or more the gain of the dish.

 

[Babadem]

Thanks to my friend PotroLoco for this I have used it and it works great for prime focus dishes . Here is the attachment

That's nice, pretty much the same as "diameter squared divided by 16 times depth = focal length". Also you may want to give this program a try: Parabola Calculator version 2.0

Excellent tools. Thanks, guys!!:up

 

[neljtorres]

Your Welcome Babadem