In reply to Bellie:
I'm not a techie , but had a similar problem when using my iPad in the garden at the rear of the house where I got no signal , one day I saw a router in a charity shop, and I bought it for a pound, got some cable , linked them and stuck the second one to the rear, and that solved the problem .
No technical knowledge needed ( just as well as I don't have any)
Edit. By they way, I have no idea why that worked, I would be happy to know if it was boosting the signal, or acting as an antenna , bridge or whatever .
Post edited at 20:47