Quectel - Programming Carrier Bands and Groups of Bands

How to tutorials for modems, hotspots, dongles
mezmerizz0454
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Re: Quectel - Programming Carrier Bands and Groups of Bands

Post by mezmerizz0454 » Fri Jun 26, 2020 3:31 pm

worked great thx for the info

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Re: Quectel - Programming Carrier Bands and Groups of Bands

Post by lawnmowerman » Thu Jan 07, 2021 8:44 am

I used the Excel doc from the tutorial to generate following AT command to set the Quectel EP06 to look for B4, B13, and B66, in that order:

AT+QCFG="band"
+QCFG: "band",0x260,0x20000000000001008,0x1

Does that mean it will always use B4 as primary/preferred band? This is what I want. What I don't want is for the modem to drop B4 and only select B13, or use B13 as primary and aggregate with B4. I want it to always select B4 as primary and aggregate with B13 and/or B66 as secondary.

When using OEM band configuration, modem will sometimes select B13 as primary, since B13 is strongest signal - but it's also slower speeds :x

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Re: Quectel - Programming Carrier Bands and Groups of Bands

Post by lawnmowerman » Thu Jan 07, 2021 11:00 am

lawnmowerman wrote:
Thu Jan 07, 2021 8:44 am
Does that mean it will always use B4 as primary/preferred band?
Well, the answer appears to be no. I noticed my internet was slower than usual, checked and found that the modem had selected B13, occasionally aggregating with B4, but definitely using B13 as primary. Sent AT command to lock onto B4 and got back my high speeds...

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Re: Quectel - Programming Carrier Bands and Groups of Bands

Post by megaplow » Mon Jan 11, 2021 12:04 pm

Is there a list of all the AT commands needed to set up the EM12g? I am looking to set up a EM12 on PagePlus.
I looked at the spreadsheet posted above and decided quickly that I was in over my head. I do not want to brick the modem.

Aside from the full list of commands, which bands are required for PagePlus/verizon?

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BillA
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Re: Quectel - Programming Carrier Bands and Groups of Bands

Post by BillA » Tue Jan 12, 2021 2:53 am

megaplow wrote:
Mon Jan 11, 2021 12:04 pm
Is there a list of all the AT commands needed to set up the EM12g? I am looking to set up a EM12 on PagePlus.
I looked at the spreadsheet posted above and decided quickly that I was in over my head. I do not want to brick the modem.

Aside from the full list of commands, which bands are required for PagePlus/verizon?
megaplow wrote:
Mon Jan 11, 2021 12:04 pm
Is there a list of all the AT commands needed to set up the EM12g? I am looking to set up a EM12 on PagePlus.
I looked at the spreadsheet posted above and decided quickly that I was in over my head. I do not want to brick the modem.

Aside from the full list of commands, which bands are required for PagePlus/verizon?

One way to force the modem to a primary band, is by locking to a single band, but of course you'd lose the CA capability. Once you lock it to more than one band, then the tower decides which one is used as the primary/secondary. On some modems you could use "cell-ID" to specify the primary/secondary (PCC/SCC) bands, but it's not easy since you have to get the cell-ID's among other items. Also, if the local towers are changed/upgraded, you will lose signal completely till you reprogram the cell-ID list. In my experience it's best to leave it on auto-scan, and use a high gain parabolic grid antenna aimed at the best tower.


PagePlus uses Verizon bands as you can see below:

US 4G-LTE bands ("*" = Primary bands)
ATT = *2, 4, 5, 12, 14, 17, 29, 30, 46, 66
TMO = 2, *4, 5, 12, 46, 66, 71
VZW = 2, 4, 5, *13, 66 *** PagePlus bands ***
SPR = *25, 26, 41

US 5G-NR Bands/(frequencies)
sub-6Ghz is used primarily by ATT and Tmobile (bands are designated by the lower case letter "n")
n2 (1,900Mhz), n5 (850MHz), *n41 (2,500MHz), n66 (AWS-3), *n71 (600MHz)

mmWave is used primarily by Verizon (bands are designated by the upper case letter "N")
N260 (39GHz), N261 (28GHz)


US 5G bands/(Frequencies)
sub-6Ghz is used primarily by ATT and Tmobile (bands are designated by the lower case letter "n")
n2 (1,900Mhz), n5 (850MHz), *n41 (2,500MHz), n66 (AWS-3), *n71 (600MHz)


mmWave is used primarily by Verizon (bands are designated by the upper case letter "N")
N260 (39GHz), N261 (28GHz)

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Re: Quectel - Programming Carrier Bands and Groups of Bands

Post by megaplow » Tue Jan 12, 2021 12:09 pm

@BillA,
Thanks for the info! You mentioned auto-scan, that seems a lot easier than using the specific band commands. The spreadsheet came up with the following commands:

Band 2 = AT+QCFG="band",0,2
Band 4 = AT+QCFG="band",0,8
Band 5 = AT+QCFG="band",0,10
Band 13 = AT+QCFG="band",0,1000
Band 66 = AT+QCFG="band",0,20000000000000000

It also had mention of a group, would this single command replace the five above?

AT+QCFG="band",0,2000000000000101a

This router setup is going to be mobile. Is there a list of commands available for disabling roaming and other items to get modem to play nice?

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