No, its from UART1
I am working on a custom board, but I think you should be able to generate it if it is a modem sw issue.
These are all the AT commands to start searching and get GNSS data:
+WDSI: 0
+CEREG: 2
+CREG: 2
+KSUP: 0
[00:00:09.664,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KSRAT?]
+KSRAT: 1
OK
[00:00:09.668,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CEREG=0]
OK
[00:00:10.060,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CREG=0]
OK
[00:00:10.522,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT&V]
[00:00:10.997,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CMEE=1]
OK
[00:00:11.055,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CGSN=1]
+CGSN:"35114444*******"
OK
[00:00:11.061,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+CFUN=4,0]
OK
[00:00:11.263,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+KPATTERN="--EOF--Pattern--"]
OK
[00:00:11.874,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+GNSSCONF=10,1]
OK
[00:00:11.890,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+GNSSNMEA=0,1000,0,4F]
OK
[00:00:28.703,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+GNSSSTART=0]
OK
+GNSSEV: 0,1
+GNSSEV: 1,1
[00:00:29.141,000] <dbg> modem_hl7812: send_at_cmd: OUT: [AT+GNSSNMEA=4]
CONNECT
$GPGGA,000003.00,5208.1769,N,01016.3344,W,0,00,9.9,67.2,M,0.0,M,,*7F
$GNGSA,A,1,,,,,,,,,,,,,11.2,9.9,5.2*1B
$GNRMC,000003.00,V,5208.1769,N,01016.3344,W,,,060180,,,N,*6A
$PSGSA,1,,,,,,,,,,,,,0.0,0.0,0.0,1271,13234364,,,0,00,4,0,B,,0,0,0,0,0,0,0,0,0,,0*10
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You mean using a TTL terminal application on a Windows PC, like Tera Term, to manually run AT commands? If so, I haven’t tested it that way.