In 2015 I poured a slab of concrete with a mast leg on top, this could hold my 2 x 5 meter tube mast. Then I did not have to go on the roof anymore. Here I had put in my 11 meter antenna the Diamond X 3000, later I was allowed by Willem PE1PZD and Co the PD5Co to try a Deltaloop antenna, a huge antenna but in the air you see nothing of it.The neighbors did not like this and sent Enforcement on me that meant 5 years of misery with the municipality and so end of the tube mast. To get a permit to install the mast you have to spend almost 900 euros and you are not even sure that you will get that permit. I would not have been prepared to pay that for such a simple and cheap mast.