The GEOSATpro 1.2 is a great quality dish that I worked with the manufacture to design. It will perform quite well as a miniBUD
Make sure the metal post is at least 55mm OD and 2 feet tall. The way the j-post is installed in the photo, the reflector will likely contact the bottom of the post or hit the wall (depending on the satellite elevation). If the post is 55mm, suggest that you reinforce the tube with a plug like Boris suggests before tightening the 1.2 u-bolts to prevent collapsing the undersized post. Also consider adding a third u-bolt and a strip of adhesive backed sandpaper (stair tread no-slip) to add friction and reduce the amount of u-bolt torque needed to secure the mount from rotating. Anything smaller than a 55mm OD post will require shims to securely clamp with the u-bolts.
Edit: Not a good idea to mount on 2.5" PVC. This will twist under load and you will have much frustration keeping it aimed.
Make sure the metal post is at least 55mm OD and 2 feet tall. The way the j-post is installed in the photo, the reflector will likely contact the bottom of the post or hit the wall (depending on the satellite elevation). If the post is 55mm, suggest that you reinforce the tube with a plug like Boris suggests before tightening the 1.2 u-bolts to prevent collapsing the undersized post. Also consider adding a third u-bolt and a strip of adhesive backed sandpaper (stair tread no-slip) to add friction and reduce the amount of u-bolt torque needed to secure the mount from rotating. Anything smaller than a 55mm OD post will require shims to securely clamp with the u-bolts.
Edit: Not a good idea to mount on 2.5" PVC. This will twist under load and you will have much frustration keeping it aimed.