Good idea to physically combine two ku band dishes?

[nointernetguy]

I have 3 DIRECTV dishes with the images below. Could I stack two of them and have one lnb? Or is this just a really dumb question, I’m kind of a noob.

 

[Brct203]

I have 3 DIRECTV dishes with the images below. Could I stack two of them and have one lnb? Or is this just a really dumb question, I’m kind of a noob.

in theory, it might be possible. You would have to make a feedhorn with waveguides that bring both signals together with the exact same phase (equal length of waveguide).

in practicality, this would be very difficult to achieve, abd it would be much easier and cheaper to just get a 90 cm dish (and also much more reliable)

I think someone posted here about such experiment some years ago (I want to say, around 2016-2018) and if I remember well it was not successful

 

[arlo]

Interesting. There was a fellow in the NL a few years ago who placed 3 & 4 small ku dishes in a clover leaf pattern and built a tripod for prime focus lnbf. The before and after signal strengths showed that it worked pretty well.