Not sure but a 2-3/8 is what I have seen on some of the U or Pole mounts for 90cm. ?? If this means the avg. not sure. Also trying to figure it out.

Not sure if a pole bigger than 2-3/8 will fit in the bracket, should ?? Might be as the normal wall mount stuff looks a bit flimsy ??
Heighter = bigger / windload and then fitting size ??

Either way hopefully someone will correct me or once the dishes get's here 2 x 90cm I will check and see.

I have seen at my local Home Depot they have 2-3/8 by a bit over 7 feet high fence poles galvanized for about $9 and some small change and was thinking of using this and 2 wall mount bracket for this pole and mounting the while thing on my chimney's side.
About 3 by 4 feet and about 1 m / yard high made from old school clay brick. Cost is about +/- $24 .
Much cheaper than planting. And gets over the top of a distant tree.

I might have to run a few cables and anchor it into the roof like a camping tent's string's / ropes and adjustable tensioners as evrything here moves with the seasons and occasional winds of about 30mph and trim a tree top.

I think someone has mentioned you should look for about a bag 80 lbs of concrete / mixcrete etc. for every foot of the dish size , on the ones closer to a 1.8m size and about 48 hours to set before installing ?? Or the like.

Might have to read up on the way some of the mixes dries and possible weakness / strenght of the finnished product you might want.

Had to splash/sprinkle water on my concrete paving every few hours to stop heat buildup and cracking.

Also you might need a long pipe 10' / 12' and set it ?? 3 - 6 feet into the ground + needed distance about 6' above ground. Have to check on this.

This corn suryp / height above sea level kills my brain cell's LOL or I must be getting old.

Please do check this and verify before commiting.