thank you, this is very useful. Today (fine clear weather) I was getting figures like
gsmctl -A AT+QCAINFO
+QCAINFO: "PCC",1617,100,"LTE BAND 3",1,195,-87,-6,-60,30
with results up to 135Mbps down and 50Mbps up, which is way better than my ISP's DSL.
Tuning the direction of the antenna is a bit tricky single handed, so I'm going to get my MacBook to read out the results as I make small adjustments - i.e. something like this:
while true ; do; sleep 3s; ssh email@example.com -p myadminpassword gsmctl -A AT+QCAINFO | cut -d "," -f7 | say; done
Then I'll be able to hear it speaking one of the signal strength values.
Which of RSRP, RSRQ, RSSI, SINR (fields 7 to 10) from the AT command output is going to give the best indication as I repoint the antenna? Fortunately the antenna is indoors by a window, so I'll not be too troubled when I need to review in bad weather.
You might wonder why I don't just use a map and compass - the LTE masts I know about are just over the brow of a hill so I'm getting some kind of reflection.