I've got the "commercial" version of that circuit - $5 on Ebay.
It works (but then we have a lot less metal in the sky to point at being Downunder)
When I first fitted my original analogue satellite dish it needed to point pretty well directly down the line of the house - so I wasn't sure if it needed to go on the front or the back. So I got a TV outside round the back, along with the satellite receiver and a length of coax - and walked away from the house.
I then manually held the dish in position, and rotated it left and right, up and down, until I got a picture on the TV - then carefully rotated it left and right until I got the channel I was looking for, on Astra 19.2E - while doing this simple manual rotation I got a continuous stream of different satellites, making it hard to find the right one.
Next I kept the dish as carefully in alignment as I could, while I sidled slowly sideways towards the house, looking to see if I lost signal as I got close. Needless to say, this was quite difficult, and didn't go well
- but the outcome was I 'thought' it needed to go on the back, so I fitted it, then aligned it, and all was well.
Be easier now, you just look where other peoples dishes are pointing, so have a good idea where yours needs to go - but back then there were no other dishes, mine was the first.