When attempting to scan for 5G cells using 'at+qscan,' it does not work

When attempting to use ‘at+qscan’ to scan for 5G cells with my RM510Q-GL, I’m experiencing an issue where the command does not seem to work.
Here are the results of the AT Command:

ATI
Quectel
RM510Q-GLHA
Revision: RM510QGLHAR11A04M4G
OK
at+cops?
+COPS: 1,0,"SKTelecom",7

OK
at+qendc
+QENDC: 0,0,0,0,0

OK
at+qeng="servingcell"
+QENG: "servingcell","NOCONN"
+QENG: "LTE","FDD",450,05,140603,104,2500,5,3,3,1904,-77,-9,-51,15,11,10,-
+QENG: "NR5G-NSA",450,05,554,-89,14,-12,643488,78,12,1

OK
AT+QSCAN=1
+QSCAN: "LTE",450,05,2850,104,-85,-10,43,118
+QSCAN: "LTE",450,12,2850,104,-85,-10,43,118
+QSCAN: "LTE",450,30,2850,104,-85,-10,43,118
+QSCAN: "LTE",450,05,2500,104,-85,-13,43,115
+QSCAN: "LTE",450,12,2500,104,-85,-13,43,115
+QSCAN: "LTE",450,30,2500,104,-85,-13,43,115
+QSCAN: "LTE",450,05,1350,104,-77,-12,51,116
+QSCAN: "LTE",450,12,1350,104,-77,-12,51,116
+QSCAN: "LTE",450,30,1350,104,-77,-12,51,116
+QSCAN: "LTE",450,08,1550,276,-79,-8,49,121
+QSCAN: "LTE",450,30,1550,276,-79,-8,49,121
+QSCAN: "LTE",450,08,1694,276,-78,-8,50,120
+QSCAN: "LTE",450,30,9410,230,-85,-7,43,122
+QSCAN: "LTE",450,05,275,174,-92,-11,37,118
+QSCAN: "LTE",450,12,275,174,-92,-11,37,118
+QSCAN: "LTE",450,30,275,174,-92,-11,37,118
+QSCAN: "LTE",450,08,475,276,-81,-7,47,121
+QSCAN: "LTE",450,06,3050,23,-97,-15,17,114
+QSCAN: "LTE",450,06,2600,350,-77,-14,51,115
+QSCAN: "LTE",450,06,100,58,-,-,-,0
+QSCAN: "LTE",450,06,100,259,-92,-11,22,117
+QSCAN: "LTE",450,05,3200,417,-104,-17,24,111
+QSCAN: "LTE",450,12,3200,417,-104,-17,24,111
+QSCAN: "LTE",450,30,3200,417,-104,-17,24,111
+QSCAN: "LTE",450,08,3743,276,-77,-12,52,116
+QSCAN: "LTE",450,30,3743,276,-77,-12,52,116

OK
at+qscan=2
RDY
at+qscan=3
RDY
AT+QNWPREFCFG="gw_band"
+QNWPREFCFG: "gw_band",1:2:3:4:5:6:8:19

OK
AT+QNWPREFCFG="lte_band"
+QNWPREFCFG: "lte_band",1:2:3:4:5:6:7:8:9:10:11:12:13:14:17:18:19:20:21:23:24:25:26:27:28:29:30:31:32:33:34:35:36:37:38:39:40:41:42:43:46:47:48:49:66:67:68:71:250:252:255

OK
AT+QNWPREFCFG= "nsa_nr5g_band"
+QNWPREFCFG: "nsa_nr5g_band",1:2:3:5:7:8:12:14:20:25:28:34:38:39:40:41:48:50:51:65:66:70:71:74:75:76:77:78:79:80:81:82:83:84:85:86:257:258:259:260:261

OK
AT+QNWPREFCFG= "nr5g_band"
+QNWPREFCFG: "nr5g_band",1:2:3:5:7:8:12:14:20:25:28:34:38:39:40:41:48:50:51:65:66:70:71:74:75:76:77:78:79:80:81:82:83:84:85:86:257:258:259:260:261

OK
AT+QNWPREFCFG= "mode_pref"
+QNWPREFCFG: "mode_pref",AUTO

OK
AT+QNWPREFCFG= "rat_acq_order"
+QNWPREFCFG: "rat_order_pref",NR5G:LTE

OK

I’d like to note that there are no antennas connected to the modem’s mmwave (IF connector) related antenna ports, and antennas are only connected to ANT0 ~ 3 ports.
Is this issue possibly due to the lack of antenna connection to the mmwave-related ports, or is there another solution available?

Thank you.

I use the following command on my RM520

at+qscan=3,1

I’m sorry, but the command you provided also doesn’t work.

at+qscan=3,1
RDY

Sounds like you don’t have 5G bands available.

Query the command:

at+qscan=?

The following is the result of the AT command.

at+qscan=?
+QSCAN: (1-3)

OK