Hello. Like many radio amateurs, I have a very limited place to install an antenna. I made my choice on several variants of vertical multi-band antennas. This is Moonraker GP2500, Comet 250BHII and Diamon CP-6S. Who has experience with similar antennas? Which option would you advise? My building is brick built. Height of a three-story building about 10 meters. The antennas mast will be fix about 2.5 meters on the wall above flat roof. I secure it with heavy duty brackets. The point of fixing mast is shown on the photo. And the last question. The best option is with or without grounding? For me, this is important, because for the maintenance of the antenna I need to order each time in the Hire Shop a push-up ladder of 10 meters. Thank You. 73! Alex.