The new antenna mast is (custom) build and in. We’ve made a base of 150x100cm with 4 60*40 tiles as ballast. On the base there are 4 extensions of 200cm with a 60*40 ballast box. The base has a 150cm mast which is tiltable. Such is quite unseen for a flat rooftop mast. But with a 400cm mast in the rotor platform, maintenance on the antennas will be much easier!
One downside; the mast is fixed on the base instead of demountable. So i need to fix a crane to get in on the roof… The mast is fully galvanized. Special thanks to Klaas (PC2K, former PD0ZX) for help with the design and transport!