I wanted to purchase an EM160R card which is a 4x4 MIMO modem. But currently I still only have a 2x2 antenna which I may upgrade later.
I have the following questions:
Q1: In case of a 2x2 MIMO antenna, on which ports should I connect the cables? One antenna cable connects to the “M” labeled connector. Where should I connect the second cable? D/G?
Q2: Is it a problem if I only use the modem in 2x2 MIMO mode? Does the modem detects automatically that 2 outputs aren’t connected to any antenna and won’t use those accordingly?
Q3: Is there an AT command allowing to switch to 2x2 MIMO mode?
Q4: Are all frequencies available on all outputs or do they use different frequencies? In others words, will I be able to use the full spectrum of frequencies with a 2x2 MIMO antenna?
I’m asking this because the Netgear M1 (Snapdragon X16) used 2 antennas for low frequencies and the other 2 for high frequencies (don’t know if it was a hardware limitation or firmware optimization)