Today with my personal PC was able to sense Wi-Fi performance issues. So i took another laptop of mine able to perform my activity with decent speed. Note: 1st laptop is around 2 + years old .
Tried to run my favorite windows command on both the Machine:
your seeing the performance of 5 Ghz VS 2.4Ghz and its Wi-Fi chipset in action.
The first laptop with Intel 7260 AC adapter and my 2+ year old laptop is running Atheros AR9485WB-EG.
#Intel 7260 AC adapter is a 2*2 spacial stream and works with both 2.4 and 5ghz frequency and its an 802.11 AC adapter that can operate at 867mbps
#Whereas, Qualcom Atheros AR9485WB-EG is an 1*1 spacial Stream adapter and can operate only on 2.4 ghz and its an 802.11 N standard adapter that can operate at a speed of 150 Mbps.
This proves 2 things,
#Why 5Ghz.
#Why should we refresh hardware (WiFi chipset in my case). Just couple of old clients reporting slowness doesn’t mean Wi-Fi network is slow.
And finally why both of them didn’t run at top of their MCS rate supported?? Yes, your right its because of SNR.
Example I have got a screencap for you to show how does my 2.4Ghz Wi-Fi space looks like.
My Home Wi-FI is set for auto channel selection.Yes, its running on channel 2, co-channel and adjust channel interference will probably get us low SNR , apart from the RSSI.
Journey in Cyber Security and Wi-Fi Engineering 