how to Place13 Cisco 1252AG AP in Warehouse!

Unanswered Question
Jun 29th, 2010

AP model: Air-AP1252AG-C-K9.

Warehouse is composed by 5 areas,   every area is 80 * 100.  (**because the signal will be pullback; reflect; absorb; refract; pillar By goods and shelves), so we deceide to place 3 AP in every erea.

what i consider is whether those 3 AP will distrub with each other in one erea?   if i setup channel ( 1st ap is 1, 2nd is 6,  3rd is 11), is it can prevent this happen??

BTY, due to RF guns will not support 802.11n wifi standard, so we will limit the speed to 1M,2M and 11mb/s of every AP.

thanks in advance!

I have this problem too.
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Srinivas Narava Wed, 06/30/2010 - 06:29


Where you get the the same signel strength, there you will find the distrub like connecting and discunnecting, So check the signel strength with wi-fi hoper like a software, in every place you should not find same Dbi. place the APs according to every where you should find the different Dbi,

Ex.. in one place if u find same singnel from 2 APs like 65, 65 Dbi that time you will find problem of wi-fi connecting and disconnecting like...

you no need to put the limit speed...

just assaint the same SSID in all APs, different channel number like you menctioned below and locate the APs so as to not get the same signel strength in every where.

Leo Laohoo Wed, 06/30/2010 - 22:48

Antennas transmit and receive radio signals which are susceptible to RF obstructions and common sources of interference that can reduce throughput and range of the device to which they are connected. Follow these guidelines to ensure the best possible performance:

•Keep the antenna away from metal obstructions such as heating and air-conditioning ducts, large ceiling trusses, building superstructures, and major power cabling runs. If necessary, use a rigid conduit to lower the antenna away from these obstructions.

•The density of the materials used in a building's construction determines the number of walls the signal can pass through and still maintain adequate signal strength. Consider the following before choosing the location for your antenna:

–Signals penetrate paper and vinyl walls with little change to signal strength.

–Signals penetrate only one or two solid and pre-cast concrete walls without degrading signal strength.

–Signals penetrate three or four concrete and wood block walls without degrading signal strength.

–Signals penetrate five or six walls constructed of drywall or wood without degrading signal strength.

–Signals will likely reflect off a thick metal wall and may not penetrate it at all.

–Signals will likely reflect off a chain link fence or wire mesh spaced between 1 and 1 1/2 in. (2.5 and 3.8 cm). The fence acts as a harmonic reflector that blocks the signal.

•Install the antenna away from microwave ovens and 2-GHz cordless phones. These products can cause signal interference because they operate in the same frequency range as the device to which your antenna is connected.

•Install the antenna horizontally to maximize signal propagation.

donglei888999 Mon, 07/05/2010 - 18:50


Thanks a lot for your suggestion, Do u have advise one software which can investigate/survey WiFi Signal in AP coverage?? thank in advance!

Leo Laohoo Tue, 07/06/2010 - 18:15

Won't give you any functions though:  Kismet and Netstumbler (everyone's favorite).

donglei888999 Tue, 07/06/2010 - 19:42

it seems Netstumbler cannot support Windows 7 OS,   it prompt: Access denied.


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