- Modificato
@Marcin
I do not agee that MF286D with external antenna works only in SISO mode. It depends on tower distance and conditions. In case when common internal antenna is able to read signal then we have still MIMO mode. We can say about SISO mode only when internal antennas are not able to receive signals - for instance on long distances.
I do not agree also with statement that external antenna does not work at all. In the ZTEs signal is combined from external and internal antenna. When external antenna is more effective then internal one then you can see advantages.
Also... When we compare speeds of different modems than we have to be sure we use the same bands and primary band is the same during the tests. We have to be even sure that we are attached to the same tower. Primary band is not always selected automatically in optimal way.