The LTE radio mast is 1.6 km away with an unobstructed view of us. Nevertheless, I have with the Speedbox 3 Telekom only an upload of about 400-600 kbit / s and a download of 10 Mbit (LTE16000).
After Antenneninstalation and long alignment using LTEWatch there was only marginal improvement.
11MBit Download and 1 Mbit upload.
SINR was +5 to +8 and RSRQ at -9 to -6
Therefore, the antenna decreases.