Need help/suggestions with an outdoor antenna ground

Hi, Im a humble handyman and I have come across an issue while replacing some outlets in a friends condo. I think I have isolated the problem but would like some advice how to go about fixing it. The situation is as followed: Inside the master bedroom there is a switch controlled outlet(across the room), when attempting to hook it up, the new outlet, has constant power. Even when all wires on switch are disengaged the outlet still have power. I found that the switch box, which has 3-4 white wires all capped together, acts seemingly as a 'middleman' between two bathrooms, because when i disconnect the pigtailed white wires the two bathrooms lose power... Also note: (Going off my masterful diagram, see below) The ‘jump outlet’ had a white(marked black) wire twisted with a ground wire and connected to ground nut. Wires in use: Black, Red, White. So my question is... How do I get the new switch outlet to work properly? Sorry for the lack of information… I will take some pictures and post them as soon as I can. Thank you for your time. [ATTACH]74437[/ATTACH]

I'm working in a building with aluminum wiring and I have to install some new outlets and replace lights. All of existing splices are done with regular wire nut, even Al to Cu splices. Some shows signs of over heating (melted, discolored insulation). So, I will be repairing splices in the junction boxes I work on with proper connectors. I will be using AlumiConn 3 port connectors, but they are not cheap. Do I have to use special aluminum connectors for ground wiring as well or can I just twist and use regular wire nut for grounds? If not, is connecting Al ground to metal junction box with grounding screw, then grounding Cu wire to the junction box is acceptable?