around 9/10 inches under 12 for sure. ..
Ahh, you have either 9 inch or 11 inch walls then. When you said 'regular' i was wondering if they could have been 6 inchers. You might have got away with just one N13 if it was the latter.
& indy although she has a phone connection and previously had a airtel connection in her room aswell (its via telephone lines in my building) all indoor lines rj11 types. not your regular cable connection rj45 ... i have no idea how to make the linksys work here.. we later decided to cancel one connection and just use the other high speed one, so i have a 8mb connection now that i need spread across the house
Would it matter a lot if your sister did not see 8mbs but half that speed ? You can do a lot on the net with even 2Mbs.
There are two options with the linksys, the one mentioned by indy is ~Rs.8k (PLWK400) and has two adapters which you plug into the power socket in either room. The other adapter has wifi in it so any wireless device can access the net.
The second option costs ~rs..5k (PL SK400) and the only difference is it needs a wire on the other end to connect up. If she uses an tablet or smartphone in her room then she will not be able to access the web with this model. You would have to purchase an access point in addition to support that (Rs.2k by tp-link). This would provide wifi not only in her room but across one wall into adjacent rooms as well.
Since your sister is using a laptop, it would need an ethernet cable to connect between the plugged in adapter and her laptop. Now if she is static with that laptop, does not move around the house much and only uses the laptop in her room that too in a fixed location this option becomes an alternative.
Under ideal conditions the expected throughput is somewhere between 20-40Mbs. The way these adaptors work is you plug them directly into a power strip (ensure there is no surge suppressor or any sort of line conditioner in that strip, it has to be a plain vanilla one) or directly to the wall point. Connect a patch cable from your router to the adaptor in your room, do the same in her room and connect to her laptop. Then press a button on both to let them pair up and if after a minute or two if all is good it should be ready to use. Simple as that.
What is not simple here is whether both of your rooms are on the same circuit. Way you find out is if you go to the fuse box and pull the fuse for your room, the power in her room ALSO goes off. This is ideal, if not the speed will be lower. There is also the distance of 40-50 feet you mentioned. And finally there are sources of interference like motors (fans, ac, fridge etc) and even cell phone chargers that can slow the speed down by injecting noise into the power circuit. The key here is the adapters need to be further away from these sources to have less interference.
I'm very interested to see how viable this tech is but its not possible to tell you whether the speed you get will be closer to 10Mbs or 40Mbs. Price wise the 5k option is what you would have to pay with 2xN13 as well. So its an either or.
Ideally, if you could get them to demo it in your place without the obligation of buying or the option for an exchange for the N13s if unsuccessful. If you get throughput of at least 20mbs then since all you want is a connection between the two rooms as opposed to elsewhere in the house the powerline option would be better than two N13s. If you then needed wifi in her room or adjacent to then an AP connected to the adapter in her room would work.
Though i wonder what possibilities there are with two rj-11 connections in the two rooms. If there was some way to get a signal through that would be the cheapest and possibly superior solution.