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EM20 Antenna Connection and commands?
Posted: Thu Jun 25, 2020 7:58 pm
by srunyon1
On the EM20 there are 4 Connections
M M1 M2 and D/G
if only running two antenna's which should I use?
Is there any benefit of running 3 ? or does it have to be 2 or 4?
Is there a command to see the signal strength of each antenna?
My old Sierra modem had a nice status comannd that showed that info.
these commands I found do not work for me
Modem Status
AT+qnetdevstatus
AT+QNETDEVSTATUS
AT+QCAINFO < CA Info
they all error out.
I found a list of commands here someplace and copied them to a notepad, but can't find the link here again.
any help would be great.
thanks
Ziggy
Top
Re: EM20 Antenna Connection and commands?
Posted: Thu Jul 02, 2020 6:08 pm
by GeraldJ
srunyon1 wrote: ↑Thu Jun 25, 2020 7:58 pm
On the EM20 there are 4 Connections
M M1 M2 and D/G
if only running two antenna's which should I use?
Is there any benefit of running 3 ? or does it have to be 2 or 4?
Is there a command to see the signal strength of each antenna?
My old Sierra modem had a nice status comannd that showed that info.
these commands I found do not work for me
Modem Status
AT+qnetdevstatus
AT+QNETDEVSTATUS
AT+QCAINFO < CA Info
they all error out.
I found a list of commands here someplace and copied them to a notepad, but can't find the link here again.
any help would be great.
thanks
Ziggy
Top
I’m pretty new to this but I have the same modem tried to only attach 2 antennas and couldn’t get it 2 work now I’m not sure if that was because I had the wrong 2 combination of pigtails attached to antennas or if it was because I didn’t have all 4 attached. I have 4 attached now and it’s working great. Any reason why you don’t want to use 4 antennas with this modem?
Re: EM20 Antenna Connection and commands?
Posted: Thu Jul 02, 2020 9:11 pm
by Didneywhorl
You'll want to use M and D/G, though the em20 is meant for 4 antennas, it should work.
There is no command to see each antennas signal strength. The command does exist (AT+QRSRP I think) but the EM20G does not support it, and Quectel has placed the device in development limbo for now. The Quectel EM16GL-R should be is successor.
Re: EM20 Antenna Connection and commands?
Posted: Fri Jul 03, 2020 6:29 am
by GeraldJ
Didneywhorl wrote: ↑Thu Jul 02, 2020 9:11 pm
You'll want to use M and D/G, though the em20 is meant for 4 antennas, it should work.
There is no command to see each antennas signal strength. The command does exist (AT+QRSRP I think) but the EM20G does not support it, and Quectel has placed the device in development limbo for now. The Quectel EM16GL-R should be is successor.
Does the 16 in its name suggest it’s a cat 16 modem? Did they get too ambitious with the cat 20?
Re: EM20 Antenna Connection and commands?
Posted: Sat Jul 04, 2020 7:34 am
by Didneywhorl
It is a cat16 modem.
Dunno. Maybe? Its a great modem, I'm guessing they set its price point low and still didnt have mass commercial orders. The EM160 isnt much cheaper.
Re: EM20 Antenna Connection and commands?
Posted: Mon Jul 13, 2020 3:09 pm
by srunyon1
so now you tell me after i spend $$$ on the EM20
i'm running on the M and M1 and it seems ok.
sometimes augmenting still on three antenna.
and FYI
Re: EM20 Antenna Connection and commands?
Posted: Sun Jul 26, 2020 2:24 am
by Didneywhorl
AT+QRSRP is supposed to be in the available commands but Quectel never implemented it. Confirmed by Quectel directly.
Re: EM20 Antenna Connection and commands?
Posted: Fri Aug 14, 2020 9:40 am
by farberm
Did the implement AT+QRSRP on the EM160?
Re: EM20 Antenna Connection and commands?
Posted: Fri Aug 14, 2020 11:26 am
by gscheb
Hello,
Looking for opinions about the EM20 performance from people using one.
Is it worth it upgrading to it from say a EP06 or EM12? That 4x4 Mimo get worthy gains?
Re: EM20 Antenna Connection and commands?
Posted: Sat Aug 15, 2020 8:20 am
by BillA
srunyon1 wrote: ↑Thu Jun 25, 2020 7:58 pm
Modem Status
AT+qnetdevstatus
AT+QNETDEVSTATUS
AT+QCAINFO < CA Info
they all error out.
I found a list of commands here someplace and copied them to a notepad, but can't find the link here again.
any help would be great.
thanks
Ziggy
Top
The correct format is:
Code: Select all
AT+QNETDEVSTATUS?
AT+QNETDEVSTATUS=?
Re: EM20 Antenna Connection and commands?
Posted: Thu Aug 27, 2020 9:37 pm
by srunyon1
Fyi both of those error out as well, starting to regret this modem purchase. It was working fine for about a month, we pretty impressed , then it just stopped connecting. now without many commands to see whats going on im at a loss. its just stuck on connecting, it sees the sim code but never connects.
Re: EM20 Antenna Connection and commands?
Posted: Fri Aug 28, 2020 8:38 pm
by Yipzy
srunyon1 wrote: ↑Thu Aug 27, 2020 9:37 pm
Fyi both of those error out as well, starting to regret this modem purchase. It was working fine for about a month, we pretty impressed , then it just stopped connecting. now without many commands to see whats going on im at a loss. its just stuck on connecting, it sees the sim code but never connects.
Maybe it's time to reset it to factory but make sure you issue a command to save your backup. The command is somewhere on the forums. You could also try to downgrade or upgrade the firmware.
Re: EM20 Antenna Connection and commands?
Posted: Sun Aug 30, 2020 3:18 pm
by Didneywhorl
farberm wrote: ↑Fri Aug 14, 2020 9:40 am
Did the implement AT+QRSRP on the EM160?
/yes, and it doesnt work quite as expected. Still figuring it out. The AT command manual isn't published yet.
Re: EM20 Antenna Connection and commands?
Posted: Sun Aug 30, 2020 3:21 pm
by Didneywhorl
gscheb wrote: ↑Fri Aug 14, 2020 11:26 am
Hello,
Looking for opinions about the EM20 performance from people using one.
Is it worth it upgrading to it from say a EP06 or EM12? That 4x4 Mimo get worthy gains?
From the EP06, absolutely. From the EM12 and is teh 4x4 worth it? Depoends on your needs. If you live under a full function low congestion cell tower that is giving all sorts of speed, then no. EM12 w/2x2 will rock over 300Mbps down. If you have signal issues, and even with max signal are only getting meh speeds, then a bumped up modem and extra set of antennas might give you some more oomph to your setup.