Ques. I am looking for a wifi ADSL cum router and I need the range to be 2 storeys high. Router will be placed on the ground floor. Please advise. Thank you.
Ans. Normal ADSL Routers are equipped with 3dbi gain antenna that have a range of up to 12-20 ft and this range decreases when there are walls in between, as signal strength weakens after each successive wall.
So buy a router with high gain antenna( 5 dbi) so that you can catch its signal up to second floor.
few of our suggestions are.
TP-LINK TD-W8951ND 150Mbps Wireless N ADSL2 Modem Router
TP-LINK TD-W8961ND 300Mbps ADSL2+ Wireless with ModemRouter(recommended)
Asus Wireless-N150 ADSL Modem Router
All have antenna with 5dbi Gain and should be enough to cover up to 2 stories. If not then you need to use a repeater.
Note: Routers location also affects it's range. So place it in the center of the home and high up on the wall.