@Wash, use the 12-27db loss as a indicator of what outputs in gain you need, and keeping in mind a lot of RF power hitting a concrete block will produce harmonics of frequencies that will either cancel out the carrier or distort it. This is impossible to detect, but to visualize an example : In CBD, if you look at the RF signals on normal TV stations, some views have shadows in the image details. That is all reflected signals off the buildings. Using the same principle, APs will be error prone and less outputs. In a clean Wifi network, you are generally looking at very low latencies around 1-20ms internally. HTHs. :-)

Rgds.

On Tue, Feb 21, 2012 at 11:42 AM, Odhiambo Washington <odhiambo@gmail.com> wrote:


On Tue, Feb 21, 2012 at 11:23, aki <aki275@gmail.com> wrote:
@Wash, the amount of signal attenuation in concrete various from 12-27db. This is a huge loss, and if the concrete has metal in it, the attenuation increases. The other problem is that throwing a strong signal at it is going to cause various reflections and noise therefore you could end up with a very slow connection with large dropouts due to errors, no matter the signal strength. Since you are in the floor, give power-line ethernet a try if you can find the devices locally. :-)


@Aki,

Powerline ethernet is an option I have at hand, but 3rd level, really. I am allowed to drill a hole through the wall to pass a cat5e cable, and there is trunking already. I will only drill a hole (it's cheaper and easier than Powerline) if I have to use two APs. For now I must rule out a single AP first.