Boosting wireless internet signal

[T.G]

Typically there shouldn't be any problems, but once in a while someone makes a device that isn't fully compliant with standards.

Additionally, if your base router has removable antennas, you can also replace them with hi-gain antennas for some increase in range, although it sounds like your situation requires more range increase than hi-gain antennas will give you, so you would still be into a buying a repeater or two.