Wireless Joint

(edited to add attachments)
My first attempt at a cellular network build and I'm stuck. I can't get a connection after running through several tutorials/troubleshooter posts.

Here's what I've done so far:
1. Flashed GoldenOrb_2019-11-25 Found here on my Linksys WRT32X Router.
2. Unboxed my USB3.0 to NGFF m.2 Key B adapter enclosure, installed the Sierra EM7511 Modem (FW installed), connected the pigtails to the main and aux ports, then attached two 4G LTE omni-dir attennas. Plugged this into the USB 3.0 port on my router. (Maybe I need an additional power source besides the USB cord?) Install Instructions derived from this tutorial.
3. installed Sierra Wireless Driver onto my Windows 10 laptop (Jul 06, 2018 - Author: Sierra Wireless - Version 4836)
4. Tested my Tmobile sim card in an ipad to be sure sim card works fine...it did.
5. Configured GoldenOrb router per Jim's tutorials bottom third of the page "STEP THREE" for the Sierra wireless cards (i.e. with tmobile's apn: fast.t-mobile.com, ttl 64, and the other minor configuration settings)
6. Did a hard reboot of the router, installed the sim card, and the modem is definitely trying to connect. It will recognize my sim card with the correct phone number, IMEI, etc, but can't stay connected for more than a few seconds. I'm stuck at this point. Still very new to all the terminology, but learning fast. Thanks in advance for help. Here are a few screenshots of what's going on.

EDITED 2/27/2020: This modem needed more power, so added a micro usb cable to the optional power port on my enclosure which solved the connection problem. Internet is up and running...next step is optimizing my speeds/signal.

And System Log: Showing trying to connect over and over again:

Wed Feb 26 08:24:01 2020 kern.info kernel: [35151.145979] usb 3-1: new SuperSpeed USB device number 21 using xhci-hcd
Wed Feb 26 08:24:01 2020 kern.warn kernel: [35151.176808] usb 3-1: config 1 has an invalid interface number: 8 but max is 3
Wed Feb 26 08:24:01 2020 kern.warn kernel: [35151.183976] usb 3-1: config 1 has no interface number 1
Wed Feb 26 08:24:01 2020 kern.info kernel: [35151.190770] qcserial 3-1:1.0: Qualcomm USB modem converter detected
Wed Feb 26 08:24:01 2020 kern.info kernel: [35151.197167] usb 3-1: Qualcomm USB modem converter now attached to ttyUSB0
Wed Feb 26 08:24:01 2020 kern.info kernel: [35151.204432] qcserial 3-1:1.2: Qualcomm USB modem converter detected
Wed Feb 26 08:24:01 2020 kern.info kernel: [35151.210932] usb 3-1: Qualcomm USB modem converter now attached to ttyUSB1
Wed Feb 26 08:24:01 2020 kern.info kernel: [35151.223632] qcserial 3-1:1.3: Qualcomm USB modem converter detected
Wed Feb 26 08:24:01 2020 kern.info kernel: [35151.230085] usb 3-1: Qualcomm USB modem converter now attached to ttyUSB2
Wed Feb 26 08:24:02 2020 kern.info kernel: [35151.241495] qmi_wwan 3-1:1.8: cdc-wdm0: USB WDM device
Wed Feb 26 08:24:02 2020 kern.info kernel: [35151.253671] qmi_wwan 3-1:1.8 wwan0: register 'qmi_wwan' at usb-f10f8000.usb3-1, WWAN/QMI device, 36:9e:13:b0:78:98
Wed Feb 26 08:24:02 2020 user.notice Log Print : Driver Name : 1 qcserial
Wed Feb 26 08:24:02 2020 user.notice Log Print : Driver Name : 2 qcserial
Wed Feb 26 08:24:02 2020 user.notice Log Print : Driver Name : 3 qcserial
Wed Feb 26 08:24:02 2020 user.notice Log Print : Driver Name : 4 qmi_wwan
Wed Feb 26 08:24:02 2020 user.notice usb-modeswitch: Add : 3-1: Manufacturer=Sierra_Wireless,_Incorporated Product=Sierra_Wireless_EM7511_Qualcomm®_Snapdragon™_X16_LTE
Wed Feb 26 08:24:02 2020 user.notice usb-modeswitch: *****************************************************************
Wed Feb 26 08:24:02 2020 user.notice usb-modeswitch: *
Wed Feb 26 08:24:02 2020 user.notice usb-modeswitch: * Start of Modem Detection and Connection Information
Wed Feb 26 08:24:02 2020 user.notice usb-modeswitch: *
Wed Feb 26 08:24:02 2020 user.notice usb-modeswitch: * Product=Sierra_Wireless_EM7511_Qualcomm®_Snapdragon™_X16_LTE-A 1199 9091
Wed Feb 26 08:24:02 2020 user.notice usb-modeswitch: *
Wed Feb 26 08:24:02 2020 user.notice usb-modeswitch: *****************************************************************
Wed Feb 26 08:24:02 2020 user.notice usb-modeswitch: *****************************************************************
Wed Feb 26 08:24:02 2020 user.notice usb-modeswitch: *
Wed Feb 26 08:24:02 2020 user.notice usb-modeswitch: * This device does not have a switch data file
Wed Feb 26 08:24:02 2020 user.notice usb-modeswitch: *
Wed Feb 26 08:24:02 2020 user.notice usb-modeswitch: * Product=Sierra_Wireless_EM7511_Qualcomm®_Snapdragon™_X16_LTE-A 1199 9091
Wed Feb 26 08:24:02 2020 user.notice usb-modeswitch: *
Wed Feb 26 08:24:02 2020 user.notice usb-modeswitch: *****************************************************************
Wed Feb 26 08:24:09 2020 kern.info kernel: [35158.821896] usb 3-1: USB disconnect, device number 21
Wed Feb 26 08:24:09 2020 kern.info kernel: [35158.827097] qcserial ttyUSB0: Qualcomm USB modem converter now disconnected from ttyUSB0

Your PDF files did not attach.

Once your modem is connected, run the command
And post the results. Run it a second time after it disconnects.

Initially:
AT!GSTATUS?
Can't open device /dev/ttyUSB.

Woohoo! I'm online!

I decided to add extra power to the optional micro USB power port to see if insufficient power was causing the problem and that solved the connection issue!! Now I get:


AT!GSTATUS?
!GSTATUS:
Current Time: 555 Temperature: 35
Reset Counter: 1 Mode: ONLINE
System mode: LTE PS state: Attached
LTE band: B66 LTE bw: 20 MHz
LTE Rx chan: 0 LTE Tx chan: 132272
LTE SSC1 state:NOT ASSIGNED
LTE SSC2 state:NOT ASSIGNED
LTE SSC3 state:NOT ASSIGNED
LTE SSC4 state:NOT ASSIGNED
EMM state: Registered Normal Service
RRC state: RRC Idle
IMS reg state: No Srv

PCC RxM RSSI: -72 PCC RxM RSRP: -106
PCC RxD RSSI: -71 PCC RxD RSRP: -107
Tx Power: -- TAC: b3ff (46079)
RSRQ (dB): -14.6 Cell ID: 0057dd01 (5758209)
SINR (dB): -3.8


OK

Speed tests:

2/26/2020
11:41 AM
75ms ping
17.87Mbps dn
1.02Mbps up
< 50
St. Paul, MN
CenturyLink
T-Mobile

Great. Yes, lack of sufficient power can and will cause issues.