Here is the issue: (TL;DR at bottom for "@Baghern")
Father has a hobby room/tin shed detached from the house. It's about 30m from the house. He wants WiFi access in the shed, but I told him that the house WiFI wont reach that far, let alone through a tin shed with insulated foil lined walls. They got the IT contractor for work to solve it and all he did was put a Ubiquti WiFi repeater on the back of the house. It didn't fix the Faraday cage effect of the shed. Still no WiFi in the shed.
Next, the same IT installer used a Ethernet over powerline adaptor. That didn't work because the house and the shed are on totally different circuits.
Next, same IT moron again, installs WiFi range extender into power point in shed. Still no WiFi…
What I told him was we needed something that had an external antenna outside the building, run the cable inside the shed and put a range extender inside, essentially punching a hole through the tin wall…
Here is my problem. All of the WiFI extenders I have looked at all have fixed antenna. I am looking for suggestions on a good omni-directional antenna and range extender options I can use. Prefer 2.4 and 5gHz set up to future poof the system should it ever require it.
edit: Due to a few people suggesting it, LAN cables are off the table as well. There is no room left in current conduit and have been told that there is no way dad's lawn is being dug up a 3rd time for a single LAN cable. Infrastructure already exists to use WiFi and running a cable out there would cost way more than an antenna and a repeater box. And lets face it, they would only call on fcuk knuckle to come and run that cable, and that isn't on the table either :D
edit 2: Rebuilding the shed is not an option! Thanks @Boomramada. Have a few good suggestions now. Will add a poll of what I think are heading the right direction…
edit 3: Would like to extend a great big thanks to everyone who replied. Some really knowledgeable people on here with some great advice. Even the ones that didn’t read the OP and kept suggesting LAN cables and power line adapters. Every comment was appreciated. I have ended up ordering the Ubiquity Nanostation M2 Loco. And as per the poll, I’m going to jam the old IT dorks head through the wall and see if that improves coverage… and I have the Nanostation as a back up. I know which one will make me feel better.. :D Plot twist: next thread is “can’t get this repeater working. Any help?”
TL;DR: Tin shed (large Faraday cage) in back yard resists WiFi ingress. Need Internet so father can watch pr0n in peace. Make suggestions on how to punch WiFi signal through shed walls.
Go to Ebay, find a used/cheap standard router that is compatible with dd-wrt firmware and has a screw on antenna. Then on Ebay buy a screw on antenna that has a long cable or extension cable for the router antenna.