search for "ethernet extenders". You'll find plenty of them. A higher grade of cable isn't going to be enough. You'll also need a grade fit for that use. I'd try not to expose it to lightning so you may have to bury it.
New to this so would appreciate so guidance. I have a satellite broadband set up in my house. However, I need to run an ethernet cable from my modem/router to another building on my property that is c.200m away (because it's way too far for wi-fi and there is a field in between the 2 properties).
In this other property I would like to connect the cable to another wireless router so I can use my laptop wirelessly.
Firstly, is this even possible?
Secondly, I have read that standard RJ-45 ethernet has a max working length of 100m. Is there anyway around this by using higher grade cable?
Any advice would be very much appreciated.