I have AIR-AP1141N-A-K9 access point, but can not get over 130 Mbps speed. Looking at the manual it appears that I need to set "channel width" to 40-above or 40-below, but it only accepts 20. Is the 2.4Ghz radio limited to 20Mhz? Since the specs indicate that it can do 300Mbps, I must be misunderstanding something.
I have the same problem. when i was using old firmware i could set channel width 40 Mhz. i checked it in inSSIDer software. but now i updated my AP to 12.4(25d)JA version and i cant even choose channel width - only 20 Mhz.
is it possible to use 40 Mhz channels? my AP number is AIR-AP1141N-E-K9
In order to get the 300 Mbps connectivity we need to enable 40 MHz channel operation . 40 MHz channel operation can not be enabled on 2.4 Ghz b/g radio in latest software release as it 2.4 MHz with 40 MHz doesnt allow channel re-use.
AP 1141 has only 2.4 GHz radio , so you will not be able to get the 300 Mbps connectivity. What you can get maximum is 144 Mbps . also note its connectivity not throuput. There are other features like Frame aggregation which you need to enable to get maximum throuput.