Ano, v original firmware nieje nic ine ako percenta, co je dost blbe, pretoze nikto nevie, co tie percenta skutocne znamenaju.
Potreboval by si sa dostat k lepsim hodnotam, napriklad takymto:

Carolco Wireless ESSID:"SkyNet"
Mode:Managed Frequency=2.417 GHz Access Point: C4:55:51:14:14:25
Bit Rate:54 Mb/s Tx-Power:-3 dBm Sensitivity:70/120
Retry:on RTS thr:off Fragment thr:off
Encryption key:off
Link Quality=86/100 Signal level:-57 dBm Noise level:-98 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:251 Invalid misc:0 Missed beacon:4

Tu je vidiet, ze okrem sily signalu, existuje este kvalita signalu a dokonca aj sum.
Kvalita je v tomto pripade v percentach 86 zo 100 moznych.
Velmi priblizne sa bez merania da hovorit len o tom, ze ak kolise sila signalu je problem najcastejsie s konektormi, koroziou a pod.
Ak kolise kvalita, je problem s rusenim cudzou stanicou, pricom ak to nieje zrovna AP, tak "site_survey" neukaze nic.