Quectel RM520n-gl - can't reach 5g

Technical Subjects
1

Hello I have RM520n-gl modem and the problem is I can’t reach 5g connection. Do I need attach all 4 anntenas to this modem? I have supposedly 5g sim-card from our provider.
AT command below

AT+QENG=“servingcell”

+QENG: “servingcell”,“NOCONN”,“LTE”,“FDD”,260,01,4FBB01,239,1300,3,5,5,5232,-107,-10,-77,12,9,100,-

I suspect that there should be something like 5G-5GNR output? Am I rifght?
Thanks for any help

2

Hi @imthernet

It is recommended that you connect all the antennas, you can find more in the below

10a3cb310e213ffbbdfdc5b736e183c
10a3cb310e213ffbbdfdc5b736e183c1139×756 83.7 KB

690cd25fbfe4961da38327491b3f2ac
690cd25fbfe4961da38327491b3f2ac1050×401 34 KB

Also you can try to lock to 5G with following command to test.
AT+QNWPREFCFG=“mode_pref” // Query the current network search mode
AT+QNWPREFCFG=“mode_pref”,NR5G // Lock to NR5G
AT+QNWPREFCFG=“mode_pref”,LTE:NR5G // Lock to LTE and NR5G

Thanks

3

Thank you for your answer. I will be testing it soon.

4

Hello, I’m testing again the RM520N-GL 5G module. There is still problem to reach 5g signal.
Some additional informations from AT query:
Module FW - response: ‘RM520NGLAAR01A05M4G_01.001.01.001’

'AT+QNWPREFCFG="nr5g_disable_mode"'
response: ‘+QNWPREFCFG: “nr5g_disable_mode”,1’

'AT+QNWPREFCFG="rat_acq_order"'
response: ‘+QNWPREFCFG: “rat_order_pref”,NR5G:LTE:WCDMA’

'AT+QNWPREFCFG="mode_pref"'
response: ‘+QNWPREFCFG: “mode_pref”,AUTO’

'AT+QRSRQ'
response: ‘+QRSRQ: -9,-8,-32768,-32768,LTE’

After last AT+QRSRQ it looks like module only read signal from 2 antennas out of 4. I’ve connected all four antennas.
I am still available to get LTE connection only.

5

Is the firmware ‘RM520NGLAAR01A05M4G_01.001.01.001’ correct? Is there a newer firmware available?

6

Hi @imthernet

I don’t think this firmware is causing it, if you want the new one you can find it below, please read the Release note to decide if you want to upgrade.
RM520NGLAAR01A08M4G_14.201.14.201.zip

Br，
Puck