Wifi Range issues - Old farm house.

Hi,
I am hoping someone could offer some help. I have to install a router in a house to have a wifi connection throughout. The house is a very old farm house with very thick stone walls external walls are 1 meter thick internal walls are around 30 cm. I had installed a belkin N1 router and lets just say it's range only goes about 10 meters.

I would like to somehow boost the signal. Would a special router be required or could I maybe get an powerful external antenna ?

Could I connect lots of antennas to a single wifi modem router ?

Thanks in advance.

Those are some bunker walls! I suggest getting an inexpensive signal strength sniffer so you can find exactly where the best reflection points in the house are. Signals bounce as well as go through walls and get diffused, scattered etc.

Your best bet is to put it in a high central place in the room and center most in the house, and then find the spots where the signals reflect the strongest. Also, you should be able to swap out an antenna on the router with a heavy duty amplifier omni directional antenna for $20-40, since they are usually connected via some standard type of jack which you can swap antennae out with. Also, 2.4GHz signals bounce more than 5GHz so you probably would want to use 2.4GHz when inside a bunker since it will bounce farther. Just leave the doors open

A TP link TL-ANT2415D antenna is an example of one that would probably work well as an add on/replacement antenna. Just make sure you get the correct adapter for whatever antenna you might buy.