RM500Q-AE with 2x2 MIMO

[gdhorn]

Hi all,

Can we operate a Quectel RM500Q-AE with “only” 2x2 MIMO in 5G mode. E.g. with one XPOL-2-5G Poynting antenna?

It runs on a Mikrotik RBM33G. At the moment with a Quectel EP06. This results at about 100 Mbps DL

Thanks for your feedback.

Simon

[Didneywhorl]

I think there is a command to disable 4x4 MIMO....


try:

Code: Select all

AT+QCFG="lte4x4mimo/disable",1

1 for 4x4 off
0 for 4x4 on

[gdhorn]

Thanks for your answer.

Is 5G in principle (independent from quectel) possible with only two antennas (= 2x2 MIMO)?

I don't have the RM500Q (yet).

[Didneywhorl]

Yes, the 5GNR bands support and MIMO capabilities per band used I think is listed in the hardware design or product info documents. But generally I believe 4x4 MIMO isn't always required to use all 5GNR bands, though I could be wrong.

[Josephur]

I just tried

Code: Select all

AT+QCFG="lte4x4mimo/disable",0

on my RM500Q-AE and it returned:

Code: Select all

AT+QCFG="lte4x4mimo/disable",0
ERROR

What gives? I have two 2x2 MIMO antennas connected. One on antenna ports 0,3 and one on ports 1,2 as the documentation shows is correct (I think).

[carp4]

Did you ever figure this out? I’d like to run my RM500Q-GL with only 2 antennas also. What command finally worked and which ports on the card did you use for the two antennas?

[Didneywhorl]

Try the query: AT+QCFG=?

It might, after the latest updates, have moved to: AT+QNWPREFCFG=? or AT+QNWCFG=?