Slightly more powerful than your typical mini satellite dish are these "ears on the universe" at the Very Large Array in New Mexico.  This is a "spare", that is in the assembly building.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/51035768826@N01">Kurt Nordstrom</a> from Ponder, TX, USA
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/afroswede/385939/">Radio Dish Assembly</a>