hello everyone,

I was trying to get the signal strength of all the APs in the range.But the problem is I am getting signal level with out any unit like: signal level:203 what does this 203 mean because I need value either in dbm or watt.How to get the exact signal value or how to convert this signal level.Iwconfig help tells that


Signal level
Received signal strength (RSSI - how strong the received signal is). May be arbitrary units or dBm, iwconfig uses driver meta information to interpret the raw value given by /proc/net/wire- less and display the proper unit or maximum value (using 8 bit arithmetic)
any help will be highly regarded.

Welcome to LinuxQuestions
AFAIK it isn't possible to get an exact signal level from an RSSI value.

http://www.wildpackets.com/elements/...l_Strength.pdf

I did not mean by exact value the accuracy but problem is the value is with no unit like : signal level 204 so what does it mean ?the link you have provided is of no use in this domain as I have seen it already.
I just want to get the signal level in dm or power unit watt for all APs in range

any other guidance will be highly appreciated.

I did not mean by exact value the accuracy or precision but problem is the value got by using iwcommon.c, is with no unit like : signal level 204 so what does it depict ?the link you have provided is of no use in this domain as I have seen it already.
I just want to get the signal level in dBm or power unit watt for all APs in range

any other guidance will be highly appreciated.

You think command iwconfig able to tell this info ?


Does anyone heard about WIFI HOPPER such software? This program may help to get signal level in dbm or watt

Was there any similar thing in Linux ?
http://wifihopper.com/