hey guys, i am looking for a long range adsl router for mtnl broadband. max budget 6k
i should be capable of handling range of about 2500 sq ft.
router range depends on many factors like construction material,design of the house,presence of glass windows etc.same router which works perfectly in one house will work poorly in another house of same area but with different construction materials/design.only thing you can do is either test an average router in your house to get some idea or buy the costliest router possible in your budget(for under 6000 i suggest tp-link or asus preferably with detachable antennas so you can have the option of replacing antenna with more powerful one to increase range if need arise).
not sure(like i earlier said range depend on many factors) but to get twice the range you have to get a 3 antenna wifi router(no adsl) like this & may have to purchase powerful external antenna to further boost the range:
TP-Link : TL-WR941ND : 300Mbps Wireless N Router - www.deltapage.com
TP-LINK TL-ANT2408CL 2.4GHz 8dBi Indoor Omni-directional Antenna | eBay
availability of W8970 might be an issue & also it will cost ~5500 at least(based on international price in $) but it looks good.