I have connection to a tower 9.4 km away. I use a mimo antenna with 15dBi gain to connect either using gsm or lte (B20 @ 800).
When the queqtel ec20 is in gsm mode, the connection is rather stable but almost unusable due to very low speed. When in Lte mode the connection is unstable but if there is a constant transfer (at least 1 ping every 6 seconds with ssh remote execute from a second connection) then the connection is stable and very fast.
I am wondering if an antenna with higher gain eg 21 dBi would stabilize the connection (eg this one) or if I should leave it as is and automate my pings!!
root@turris:~# qq --nas-get-signal-info
[/dev/cdc-wdm0] Successfully got signal info
RSSI: '-46 dBm' RSRQ: '-12 dB' RSRP: '-74 dBm' SNR: '0.8 dB'`