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Dan, I ran a simple script to see how mncli
stacks up with iwlist. I need to do some formatting and
putting the data in order to make my full case. First, at a
cursory review the dBm is available from the radio. Secondly the quality
of the connection is expressed as a ratio. I don't know what the
denominator means -- why out of 70 I have no idea { 100 / sqrt(2)
3dB point is 0.707 ?} .
For me the good news is that the signal strength, at least, is expressed in REAL units. The S/N isn't known and maybe the Quality index is a measure of that. The NM chose channel 3 and it's signal is OK but the quality is only 49 out of 70 with a signal strength of -61dBm. By comparison, channel 8 has a quality rating of 70 out of 70 and a signal of -38dBm (-38dBm to -61dBm is 1/200th the signal power). Functionality is more important than speed. SIGNAL RATE SSID CHAN ACTIVE 65 130 Mbit/s Clive 3 yes Frequency:2.422 GHz (Channel 3) Quality=49/70 Signal level=-61 dBm ESSID:"Clive" Channel:8 Frequency:2.447 GHz (Channel 8) Quality=70/70 Signal level=-38 dBm ESSID:"Clive" service network-manager restarting Channel:1 Frequency:2.412 GHz (Channel 1) Quality=29/70 Signal level=-81 dBm ESSID:"clive" Channel:1 Frequency:2.412 GHz (Channel 1) Quality=38/70 Signal level=-72 dBm ESSID:"ATT7DqS9qs" Channel:1 Frequency:2.412 GHz (Channel 1) Quality=41/70 Signal level=-69 dBm ESSID:"Sonic-8b19" Channel:3 Frequency:2.422 GHz (Channel 3) Quality=49/70 Signal level=-61 dBm ESSID:"Clive" Channel:4 Frequency:2.427 GHz (Channel 4) Quality=32/70 Signal level=-78 dBm ESSID:"Electric_Painting" Channel:6 Frequency:2.437 GHz (Channel 6) Quality=31/70 Signal level=-79 dBm ESSID:"Clive" Channel:6 Frequency:2.437 GHz (Channel 6) Quality=30/70 Signal level=-80 dBm ESSID:"" Channel:6 Frequency:2.437 GHz (Channel 6) Quality=25/70 Signal level=-85 dBm ESSID:"xfinitywifi" Channel:6 Frequency:2.437 GHz (Channel 6) Quality=30/70 Signal level=-80 dBm ESSID:"" Channel:6 Frequency:2.437 GHz (Channel 6) Quality=26/70 Signal level=-84 dBm ESSID:"choifamily" Channel:6 Frequency:2.437 GHz (Channel 6) Quality=33/70 Signal level=-77 dBm ESSID:"Casa Carvajal-2.4" Channel:6 Frequency:2.437 GHz (Channel 6) Quality=32/70 Signal level=-78 dBm ESSID:"xfinitywifi" Channel:6 Frequency:2.437 GHz (Channel 6) Quality=35/70 Signal level=-75 dBm ESSID:"" Channel:6 Frequency:2.437 GHz (Channel 6) Quality=25/70 Signal level=-85 dBm ESSID:"" Channel:6 Frequency:2.437 GHz (Channel 6) Quality=33/70 Signal level=-77 dBm ESSID:"" Channel:6 Frequency:2.437 GHz (Channel 6) Quality=30/70 Signal level=-80 dBm ESSID:"28114" Channel:8 Frequency:2.447 GHz (Channel 8) Quality=70/70 Signal level=-38 dBm ESSID:"Clive" Channel:10 Frequency:2.457 GHz (Channel 10) Quality=30/70 Signal level=-80 dBm ESSID:"" Channel:11 Frequency:2.462 GHz (Channel 11) Quality=29/70 Signal level=-81 dBm ESSID:"" Channel:11 Frequency:2.462 GHz (Channel 11) Quality=27/70 Signal level=-83 dBm ESSID:"" Channel:11 Frequency:2.462 GHz (Channel 11) Quality=31/70 Signal level=-79 dBm ESSID:"" Channel:11 Frequency:2.462 GHz (Channel 11) Quality=35/70 Signal level=-75 dBm ESSID:"XFINITY" Channel:11 Frequency:2.462 GHz (Channel 11) Quality=34/70 Signal level=-76 dBm ESSID:"xfinitywifi" Channel:11 Frequency:2.462 GHz (Channel 11) Quality=33/70 Signal level=-77 dBm ESSID:"CableWiFi" Channel:11 Frequency:2.462 GHz (Channel 11) Quality=27/70 Signal level=-83 dBm ESSID:"" Channel:11 Frequency:2.462 GHz (Channel 11) Quality=30/70 Signal level=-80 dBm ESSID:"xfinitywifi" Channel:11 Frequency:2.462 GHz (Channel 11) Quality=33/70 Signal level=-77 dBm ESSID:"CableWiFi" Channel:11 Frequency:2.462 GHz (Channel 11) Quality=27/70 Signal level=-83 dBm ESSID:"" Channel:153 Quality=30/70 Signal level=-80 dBm ESSID:"Enermax Wi-Fi-5G" Channel:6 Frequency:2.437 GHz (Channel 6) Quality=33/70 Signal level=-77 dBm ESSID:"xfinitywifi" Channel:6 Frequency:2.437 GHz (Channel 6) Quality=24/70 Signal level=-86 dBm ESSID:"Lucero wifi" Channel:6 Frequency:2.437 GHz (Channel 6) Quality=34/70 Signal level=-76 dBm ESSID:"" Channel:11 Frequency:2.462 GHz (Channel 11) Quality=27/70 Signal level=-83 dBm ESSID:"XFINITY" Channel:1 Frequency:2.412 GHz (Channel 1) Quality=25/70 Signal level=-85 dBm ESSID:"CarDV-98E4" Channel:3 Frequency:2.422 GHz (Channel 3) Quality=36/70 Signal level=-74 dBm ESSID:"Sonic-4341" Channel:6 Frequency:2.437 GHz (Channel 6) Quality=22/70 Signal level=-88 dBm ESSID:"" Channel:6 Frequency:2.437 GHz (Channel 6) Quality=32/70 Signal level=-78 dBm ESSID:"" Channel:6 Frequency:2.437 GHz (Channel 6) Quality=33/70 Signal level=-77 dBm ESSID:"HomeF1- 2.4G" Channel:6 Frequency:2.437 GHz (Channel 6) Quality=25/70 Signal level=-85 dBm ESSID:"" Channel:10 Frequency:2.457 GHz (Channel 10) Quality=29/70 Signal level=-81 dBm ESSID:"pretty fly for bgn wifi" Channel:10 Frequency:2.457 GHz (Channel 10) Quality=32/70 Signal level=-78 dBm ESSID:"shid and fard" Channel:11 Frequency:2.462 GHz (Channel 11) Quality=27/70 Signal level=-83 dBm ESSID:"ATT6d474D4" Channel:44 Frequency:5.22 GHz (Channel 44) Quality=18/70 Signal level=-92 dBm ESSID:"Boujeeeeeeee" Channel:1 Frequency:2.412 GHz (Channel 1) Quality=29/70 Signal level=-81 dBm ESSID:"belkin.501" Channel:1 Frequency:2.412 GHz (Channel 1) Quality=29/70 Signal level=-81 dBm ESSID:"belkin.501.guests" Channel:1 Frequency:2.412 GHz (Channel 1) Quality=31/70 Signal level=-79 dBm ESSID:"Sonic-b485" Channel:11 Frequency:2.462 GHz (Channel 11) Quality=36/70 Signal level=-74 dBm ESSID:"" SIGNAL RATE SSID CHAN ACTIVE 100 54 Mbit/s Clive 8 no 65 130 Mbit/s Clive 3 yes 52 130 Mbit/s Sonic-8b19 1 no 47 130 Mbit/s ATT7DqS9qs 1 no 44 130 Mbit/s Sonic-4341 3 no 44 195 Mbit/s -- 11 no 42 195 Mbit/s -- 6 no 42 195 Mbit/s XFINITY 11 no 42 195 Mbit/s -- 11 no 42 195 Mbit/s Boujeeeeeeee 11 no 40 130 Mbit/s -- 6 no 40 195 Mbit/s xfinitywifi 11 no 39 270 Mbit/s HomeF1- 2.4G 6 no 39 195 Mbit/s Casa Carvajal-2.4 6 no 39 195 Mbit/s -- 6 no 39 195 Mbit/s xfinitywifi 6 no 39 195 Mbit/s CableWiFi 11 no 39 195 Mbit/s CableWiFi 11 no 37 54 Mbit/s Electric_Painting 4 no 37 195 Mbit/s xfinitywifi 6 no 37 130 Mbit/s -- 6 no 37 195 Mbit/s shid and fard 10 no 35 130 Mbit/s Sonic-b485 1 no 35 195 Mbit/s Clive 6 no 35 195 Mbit/s -- 11 no 34 195 Mbit/s -- 6 no 34 195 Mbit/s 28114 6 no 34 195 Mbit/s -- 6 no 34 195 Mbit/s -- 10 no 34 195 Mbit/s xfinitywifi 11 no 34 405 Mbit/s Enermax Wi-Fi-5G 153 no 32 65 Mbit/s clive 1 no 32 65 Mbit/s belkin.501.guests 1 no 32 65 Mbit/s belkin.501 1 no 32 54 Mbit/s pretty fly for bgn wifi 10 no 32 195 Mbit/s -- 11 no 29 195 Mbit/s -- 11 no 29 195 Mbit/s -- 11 no 29 195 Mbit/s -- 11 no 29 195 Mbit/s XFINITY 11 no 29 130 Mbit/s ATT6d474D4 11 no 27 195 Mbit/s choifamily 6 no 25 65 Mbit/s CarDV-98E4 1 no 25 270 Mbit/s xfinitywifi 6 no 25 195 Mbit/s -- 6 no 25 195 Mbit/s -- 6 no 25 195 Mbit/s Home123 11 no 25 270 Mbit/s HomeF1- 5G 157 no 24 130 Mbit/s Lucero wifi 6 no 20 130 Mbit/s -- 6 no 14 405 Mbit/s Boujeeeeeeee 44 no |