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MobiusToad
newbie
Topic Author
Posts: 28
Joined: Tue Dec 07, 2021 9:09 pm
Location: Missouri, USA

Need Help: RBM11G + Quectel RM502Q-AE + T-Mobile

Wed Dec 08, 2021 7:12 am

I wish I had more time to sit down and figure all of this out and not bother anyone, but I'm extremely pressed for time. I'm in the middle of moving (~2/3 is already moved) 49 miles away, I have work to do on the house (flooring, some framing/drywall, networking, painting, etc.), and I'm trying to get reasonably settled before Christmas. Unfortunately, where I'm moving has no DSL/Cable/Fiber internet whatsoever (even though Spectrum is right across the highway...), so I'm scrambling to get a wireless modem ready. I skipped the prebuilt router combos and outdoor modems because none of them met my needs (outdoor, PoE, and covering bands 2/66/71). I plan on picking up a Mikrotik router, switch, and access points later on.

Mikrotik RBM11G (updated to Router OS 7.1)
Quectel RM502Q-AE (firmware version RM502QAEAAR11A02M4G) (Not sure if latest version)
This Antenna: https://www.waveform.com/products/mimo- ... ts-routers
T-Mobile Sim Card

So, I turn it on. I connect my PC directly to it. I update to Router OS7.1 and change the APN to "Fast.t-mobile.com". It lists T-Mobile and shows antenna signal quality. I look at the interfaces, set WAN to lte1 and LAN to ether1. No internet yet. I messed around a bunch and tried various bits I found in the Mikrotik docs and the forum, much of which is outdated (ppp instead of lte). No progress. Decided to do a fresh Netinstall. Took hours for me to finally get that to work. Anyway, here I am, a day and half later with no working modem, some knowledge gained about the finicky Netinstall and re-familiarizing myself with RouterOS (I messed around with a Mikrotik router several years ago).

Here is my export at the moment:
# dec/07/2021 22:19:42 by RouterOS 7.1
# software id = ####-####
#
# model = RBM11G
# serial number = ############
/interface list
add name=WAN
add name=LAN
/interface lte apn
add apn=Fast.t-mobile.com
/interface lte
set [ find ] allow-roaming=no apn-profiles=Fast.t-mobile.com name=lte1
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/port
set 0 name=serial0
/interface list member
add interface=lte1 list=WAN
add interface=ether1 list=LAN
/ip address
add address=192.168.88.1/24 interface=ether1 network=192.168.88.0
/ip firewall mangle
add action=change-ttl chain=postrouting new-ttl=set:65 out-interface=lte1 passthrough=yes
add action=change-ttl chain=prerouting in-interface=lte1 new-ttl=set:65 passthrough=yes
/system clock
set time-zone-name=America/Chicago
/system identity
set name="MikroTik Modem"
Thanks in advance to anyone that helps me out. And please be patient, I'm new to cellular modems and Mikrotik-level networking.
 
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MobiusToad
newbie
Topic Author
Posts: 28
Joined: Tue Dec 07, 2021 9:09 pm
Location: Missouri, USA

Re: Need Help: RBM11G + Quectel RM502Q-AE + T-Mobile

Wed Dec 08, 2021 11:40 pm

Been messing around some more today. I seem to have it working!
# dec/08/2021 15:38:13 by RouterOS 7.1
# software id = ####-####
#
# model = RBM11G
# serial number = ############
/interface list
add name=WAN
add name=LAN
/interface lte apn
add apn=Fast.t-mobile.com
/interface lte
set [ find ] allow-roaming=no apn-profiles=Fast.t-mobile.com name=lte1
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ip pool
add name=dhcp_pool0 ranges=192.168.88.2-192.168.88.254
/ip dhcp-server
add address-pool=dhcp_pool0 interface=ether1 name=dhcp1
/port
set 0 name=serial0
/interface list member
add interface=lte1 list=WAN
add interface=ether1 list=LAN
add list=LAN
/ip address
add address=192.168.88.1/24 interface=ether1 network=192.168.88.0
/ip dhcp-server network
add address=192.168.88.0/24 dns-server=8.8.8.8,8.8.4.4 gateway=192.168.88.1
/ip firewall mangle
add action=change-ttl chain=postrouting new-ttl=set:65 out-interface=lte1 passthrough=yes
add action=change-ttl chain=prerouting in-interface=lte1 new-ttl=set:65 passthrough=yes
/ip firewall nat
add action=masquerade chain=srcnat out-interface=lte1
/system clock
set time-zone-autodetect=no time-zone-name=US/Central
/system identity
set name="MikroTik Modem"
/tool sms
set allowed-number="" port=lte1 receive-enabled=yes
 
Navegador
newbie
Posts: 25
Joined: Wed Jan 13, 2021 4:18 am

Re: Need Help: RBM11G + Quectel RM502Q-AE + T-Mobile

Sun Jan 23, 2022 1:43 am

What speeds are you seeing with this setup? Thanks!
 
User avatar
MobiusToad
newbie
Topic Author
Posts: 28
Joined: Tue Dec 07, 2021 9:09 pm
Location: Missouri, USA

Re: Need Help: RBM11G + Quectel RM502Q-AE + T-Mobile

Sun Jan 23, 2022 6:44 pm

What speeds are you seeing with this setup? Thanks!
Currently ~45mbit, and not quite as stable as I'd like, but I'm hoping I can improve it once I get around to finding the optimal mounting position and connecting it to a closer tower. Mounted to a pole is giving me a very bad SINR value, and for some reason it really wants to connect to a tower 12 miles away even though there are several that are far closer, so I need to see if I can get that SINR value better by placing it lower and using the house to block competing signals. I'll consider whether adding a second antenna for 4x4 MIMO will be worth it once I get it placed in the most optimal position.

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