Mine

# log iwlist eth1 scanning
eth1      Scan completed :
          Cell 01 - Address: 00:20:E0:96:E8:3B
                    ESSID:""
                    Mode:Managed
                    Frequency:2.412 GHz (Channel 1)
                    Quality=63/100  Signal level=-79 dBm  Noise level=-96 dBm
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
          Cell 02 - Address: 00:13:19:80:DA:30
                    ESSID:""
                    Mode:Managed
                    Frequency:2.457 GHz (Channel 10)
                    Quality=100/100  Signal level=-38 dBm  Noise level=-96 dBm
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s