Uart Wifi Module Quetion!

[diegoterc3]

Hello! I am buying this to build some circuits with wifi:
http://www.ebay.com/itm/281145549555
Now what comes in my mind first is:
Whats the distance that this wifi can opperate? It says that the output power is 18±2 dBm, but how can I calculate the total lenght from this information?
Thank you

[Whales]

I don't think it is feasible to calculate this.  One of the biggest factors is your environment:  wifi hates walls, but loves line-of-sight.  Unfortunately your best bet is to try it out, and then make improvements if it does not work.

If you are using fixed locations for your transceivers, then you can use reflectors/directional antennae to focus signals for very long distances (think in km, assuming no obstacles).  This is not as hard or as expensive as you think -- cheap wire cookware does the trick!  Checkout http://www.usbwifi.orconhosting.net.nz/

(it's called wi-fry)

[diegoterc3]

Yes I understand it is very dependant on the environment and I plan to use it inside a copper mine, but for callibration and testing porpuses I want to use it in an open environment.So I would like to know how long is the range of the module. This way I can know if this will even work or if I have to choose a different module. Does anyone know how to calculate this in a free environment?
Thank yo