06-11-2019, 10:02 AM
(This post was last modified: 06-11-2019, 10:06 AM by TheOldPresbyope.)
@JonPike
Are you sure you have the Country Code set correctly? Funny things can happen with the WiFi interface if it isn't.
In my townhouse an RPi3B+ WiFi scan picks up 14 different access points from around the neighborhood, some lowband and some highband.
From the command line, you can execute the command sudo iwlist wlan0 scan and see lots of info about the access points detected (ennumerated as Cell 01, Cell 02, ..., Cell 14 in my case). Here's a snippet from my scan (where i've elided some hex data)
It could be interesting to compare the 2.4GHz cells detected by your 3B+ and your other RPis.
Regards,
Kent
Are you sure you have the Country Code set correctly? Funny things can happen with the WiFi interface if it isn't.
In my townhouse an RPi3B+ WiFi scan picks up 14 different access points from around the neighborhood, some lowband and some highband.
From the command line, you can execute the command sudo iwlist wlan0 scan and see lots of info about the access points detected (ennumerated as Cell 01, Cell 02, ..., Cell 14 in my case). Here's a snippet from my scan (where i've elided some hex data)
Code:
pi@moode53K:/var/www/inc $ sudo iwlist wlan0 scan
wlan0 Scan completed :
Cell 01 - Address: 48:5D:36:AE:11:40
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=45/70 Signal level=-65 dBm
Encryption key:on
ESSID:"Phyllis"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=0000000000000000
Extra: Last beacon: 50ms ago
IE: Unknown: xxxxxxxxxxxxxxxxxx
<seven more lines of IE: Unknowns>
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: xxxxxxxxxxxxxxxxxxxxxxxxx
<seven more lines of IE: Unknowns>
Cell 02 - Address: 48:5D:36:E9:0B:2A
Channel:1
...It could be interesting to compare the 2.4GHz cells detected by your 3B+ and your other RPis.
Regards,
Kent
