You should not expect to find any device that will give you coverage 20m away outside through walls and open space in an urban environment. It's an unrealistic expectation. Yes it may work - but it may not either.
Can you not run cable or use Ethernet over power adapters and place another access point out there? This would always be the best option.
have you read the plethora of other threads asking this same question?
WayneI: Thanks will look at the ethernet over power option. Just wasn't sure how good the ethernet over power adaptersupply were. Any recommendations for these.
again have a read of the many threads talking about these
Ethernet over power is very hit and miss depending on what the signals have to go thru. Older wiring without RCD's and circuit breakers tends to be kinder to the signal, but the amount of other crap connected also has a huge effect on how they perform.
Is there _any_ cabling out to the outbuilding at all other than power? Even a telephone line?
Have a look for the ubiquiti tough cable, seems to be highly recommended for outdoor use. PB sell it by the large lot. One of the guys that does rural wifi might be open to selling you a cut length of outdoor rated cat cable.
Ive just pulled normal indoor cat6 thru a buried 32mm conduit along with TV coax and some "alarm" cable. If it fails the ends are easy enough to get to inorder to use it to pull some more stuff thru but for now didnt want to hassle about going and getting more cable.
People also suggest hose as something to run it thru. Dont get cheap garden hose for it, they go all brittle and crack quicker than the wire would. I have a lot buried that I used for the irrigation system since it looked tougher than the black pipe. It is not.
WayneI: Thanks. Noel Leemings said needed to buy a $450 router.
Dont do it, its a trap!
You would rather spend about 50-60 bucks running a cable to whereever you need to through a pipe and lay it in the ground (if possible)
Why do you need so much outdoor coverage? Do you have a building outside? do you go next door a lot and want a good signal from there?
@Sbiddle has already given you the best answer. Don't spend $450 on a single unit which will magically do it all the person selling it probably read it does up to 100m off the side of the box which is not right.
Remember wireless works both ways, tx/rx so if you are 20 metres away through walls and exterior cladding you will be hard pressed to get a signal that doesn't keep dropping out, and the devices you want to use out there probably wont xmit well enough to respond to the AP which will result in so many retransmits and lost packets which means you get really slow speed and it will drop out a lot, so you wont be able to watch videos, make voip calls, without having to run back inside or closer to the unit.
You will need to buy a few units to do a solution properly. And no one here can really suggest a solution unless we have seen the site.
If you want to get the outdoor coverage there are lots of outdoor access points available which you can connect to the LAN via ethernet. But don't buy a single all in one unit and expect miracles, you will be disappointed.
More than one router/access point is probably required if you want to do this properly.
Thanks guys for all your help. As mentioned Noel Leeming offered the Router, but knew if i came to a forum like this I would get better advice. Especially with experts that don't have anything to gain by their recommendations. I am thinking of going to run a cable. I have an external office which part of the work I do in there is Rugby analysis which requires Video uploading, downloading and streaming. So thanks.
"Work". "Video uploading, downloading and streaming".
Cable is the most reliable.
Involuntary autocorrect in operation on mobile device. Apologies in advance.