what can be the maximum range of signal for dsl router? i want more then 100 meter?

Answer 1

Well, like ColinC said, most home routers are much shorter than this range. If you really need that much range, there are HIGH POWER routers that will deliver that range.
http://www.bountifulwifi.com/ has some 500mw routers which do have much higher transmit range (You also need high power cards at the receiving end to get back to it!)

You can get directional antennas and specialized cards to get better range see http://radiolabs.com
You can also get power boosters to assist with getting this range. (radiolabs has those too.)

However, the MOST IMPORTANT part of the issue, this only works in "LINE OF SITE" it there are walls, buildings, hills, etc between then the challenge becomes "routing" the signal around them! That may require "repeating units" etc.
So the real answer is what is between you and the router?
If the answer is very little then a high power router and high power card is all you need.

Most off the shelf units (linksys, dlink etc) run about 50mw of output power so one that runs 500mw is over 10 times the output and more than that in distance. We use specialized antennas and outdoor access points and have users that are 4-5miles from the routers!

If you really want some nice long range gear see any of these
http://defactowireless.com
http://echotechwirless.com
http://tranzeo.com
http://hyperlinktech.com

Good Luck

Answer 2

What do you mean by "DSL router range"? The range of the DSL line? Or do you have a router with wireless access point?

Speaking of DSL range you can go up to 5 kilometers without additional equipment with shielded twisted pair.

With wireless technologies that are designed for home use you won't be able to go beyond 100 meters (usualy below 75m) and should use wireless repeaters if needed.

Answer 3

Wireless range can be up to 200 feet, if you are lucky and have no obstructions. If this is range required inside a building you can buy a wireless range extender to fit between the router and the furthest point. By cable using CAT5E or CAT6 you can get this distance easily.