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Forum Discussion

Barreller's avatar
Barreller
Aspirant
Dec 31, 2019

LB2120 Modem external antennas.

  • Connector for an external antenna. One switched RF connector for an optional external antenna (the external antenna requires two inputs)

Does anybody know what this means in the user manual?

2 Replies

  • JasBro's avatar
    JasBro
    Guide
    Jan 02, 2020

    The unit uses a MIMO antenna array. You can query the Internet to learn a lot more about this. Basically there are two radio waves being used for communications back and forth between your LB2120 and the LTE Tower. They are broadcast at 90° angles to each other (think tilted 45° to the right for one and 45° to the left for the other). External antennas are needed for both the channels to reach optimum connection speeds. Hope that hleps. 

    • Barreller's avatar
      Barreller
      Aspirant
      Jan 02, 2020

      Thanks JasBro,  That does help.  It doesn't really explain the wording in the manual regarding switching, but I note that a MiMo antenna is really needed.  I have one and will try it sometime.