TP-LINK RE550 expander Cannot connect to 4G. 5G OK
I have an EE Router (UK) and a TP-LINK RE550 network expander in extender mode not mesh. I am using the same password for my EE router and also for both 4G and 5G setups on the RE550. Both 4G and 5G are configured and the network map is showing 4G and 5G normal for both the EE router and the extender. My EE router has an SSID of EE-K7TZ9R and the RE550 SSID is EE-K7TZ9R_EXT.
I am a developer of Rasberry Pi software. I have seven Raspberry Pi's permanently connected to 4G networks either on the EE router or the RE550 extender. I have had the RE550 for about a year and all was working well until about a weak ago when the Raspberry Pi's that normally connect to the RE550 4G network either failed or switched over to the EE router 4G network. Other devices such as my TV which uses 5G still worked fine.
I checked all 4G/5G networks from all of the RPi's using the Linux iwlist instruction and I can see the RE550 network
sudo iwlist scan | grep SSID
ESSID:"EE-K7TZ9R"
ESSID:"EE-K7TZ9R_EXT"
If I look at this in detail I see the expander on channel 11. running 4G
Cell 03 - Address: 40:AE:30:60:CF:44
Channel:11
Frequency:2.462 GHz (Channel 11)
Quality=67/70 Signal level=-43 dBm
Encryption key:on
ESSID:"EE-K7TZ9R_EXT"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
18 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
Mode:Master
I also see 4G on the EE router which all Raspberry Pi's are able to connect to.
Cell 01 - Address: B8:6A:F1:61:A3:72
Channel:11
Frequency:2.462 GHz (Channel 11)
Quality=33/70 Signal level=-77 dBm
Encryption key:on
ESSID:"EE-K7TZ9R"
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
I updated the firmware but it has made no difference.
Any ideas why I cannot connect to the RE550 4G network despite being able to see. (It ain't the password)
BTW I wanted to change the channel number of the RE550 4G network but the configurator wouldn't let me
Bob Rathbone