Cradlepoint CBA850 with MC400LP6

[motrac]

first thanks to all that contribute to this great forum, i learned a lot this week searching and reading. now i need some help as i'm new to lte internet.
i first tried a WE826-T2 then a mofi 4500 and had decent results on At&t. both used band 2 for the fastest speed, here i have b2 12 and 30. b2 and 12 have the best speeds, b30 has the strongest signal but slow speeds.
i have the cba850 set up after following the guide posted here but it locks to band 30 so slower speeds that the mofi and WE826 because i could get them to either lock or default to b2.
i've read to post here on band locking and the Sierra Wireless MC7455 | EM7455 -- AT! Command Guide . i am not very good with a computer and only have a chromebook and cannot get excel to work. i'm wondering if anyone has the commands to set the cba850 to at&t bands 2 and 12 that they would share with me? i also need the band command at startup from connection manager to retain the locked band settings.
attached are some info from my setup

[Didneywhorl]

first thanks to all that contribute to this great forum, i learned a lot this week searching and reading. now i need some help as i'm new to lte internet.
i first tried a WE826-T2 then a mofi 4500 and had decent results on At&t. both used band 2 for the fastest speed, here i have b2 12 and 30. b2 and 12 have the best speeds, b30 has the strongest signal but slow speeds.
i have the cba850 set up after following the guide posted here but it locks to band 30 so slower speeds that the mofi and WE826 because i could get them to either lock or default to b2.
i've read to post here on band locking and the Sierra Wireless MC7455 | EM7455 -- AT! Command Guide . i am not very good with a computer and only have a chromebook and cannot get excel to work. i'm wondering if anyone has the commands to set the cba850 to at&t bands 2 and 12 that they would share with me? i also need the band command at startup from connection manager to retain the locked band settings.
attached are some info from my setup

Code: Select all

AT!BAND=0F,"B2 & B12",0,802

Run this in the CLI terminal to set it the first time. Run

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atterm

in the CLI terminal to access the AT Terminal
copy this to the startup command text box as well


This...

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AT!BAND=00

Should reset it back to all bands

[motrac]

thanks, i ca't find how to access this to enter start up command?

[Didneywhorl]

Which Cradlepoint firmware version are you using? Its there, just harder to find in some versions

[motrac]

not sure why but command doesn't work? i have no problem with other commands?

[motrac]

Which Cradlepoint firmware version are you using? Its there, just harder to find in some versions

updated both modem and router when i received the cba850

[Yipzy]

not sure why but command doesn't work? i have no problem with other commands?

You are missing

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AT!ENTERCND="A710"

for you to change the advanced settings.

[motrac]

You are missing

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AT!ENTERCND="A710"

for you to change the advanced settings.

thanks that worked but band didn't change, stil on band 30 with ca on 12?
l still can't find where to enter start up command, so when i reboot the setting goes back to all bands.

[Yipzy]

thanks that worked but band didn't change, stil on band 30 with ca on 12?
l still can't find where to enter start up command, so when i reboot the setting goes back to all bands.

Try

Code: Select all

AT!RESET

for changes to be saved after you add and change bands again.

[motrac]

Try

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AT!RESET

for changes to be saved after you add and change bands again.

thanks, all commands were accepted but after AT!RESET still locked to band 30 and CA on 12?

[Yipzy]

thanks, all commands were accepted but after AT!RESET still locked to band 30 and CA on 12?

I don't think you actually set the bands you wanted but instead just added to the list.

Does

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AT!BAND=?

list "0F" you added?

Does

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AT!BAND?

respond with "0F" you selected?

If not, you type

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AT!BAND=0F

to set and then verify it is set to 0F

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AT!BAND?

before resetting

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AT!RESET

[motrac]

I don't think you actually set the bands you wanted but instead just added to the list.

Does

Code: Select all

AT!BAND=?

list "0F" you added?

Does

Code: Select all

AT!BAND?

respond with "0F" you selected?

If not, you type

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AT!BAND=0F

to set and then verify it is set to 0F

Code: Select all

AT!BAND?

before resetting

Code: Select all

AT!RESET

thanks, after following your instructions it now it works.
if the modem reboots will i lose this setting since i can't find when to enter the AT config script?
also what would be the command to lock to b2 and CA on b30, please?

[Yipzy]

thanks, after following your instructions it now it works.
if the modem reboots will i lose this setting since i can't find when to enter the AT config script?
also what would be the command to lock to b2 and CA on b30, please?

Your modem shouldn't change the setting after reboots.

To lock B2+B30 add the CA to the list first

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AT!BAND=1F,"B2+B30",0,20000002

then

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AT!BAND=1F

assuming it accepts the first AT command. I'm going off from memory as I don't have one to test.

[motrac]

Your modem shouldn't change the setting after reboots.

first thank you for all your help.
i thought you have to enter the command in the AT config script? that's what i can't find.
i have the modem set up to reboot daily @ 3am and this morning it was back to b30, ca 12 because i can't find the WAN interface profile to set the bands.
also
AT!BAND=1F,"B2+B30",0,20000002 returns error

[Yipzy]

first thank you for all your help.
i thought you have to enter the command in the AT config script? that's what i can't find.
i have the modem set up to reboot daily @ 3am and this morning it was back to b30, ca 12 because i can't find the WAN interface profile to set the bands.
also
AT!BAND=1F,"B2+B30",0,20000002 returns error

You usually don't need to set a startup AT command but it appears your cradlepoint is overriding your band setting? The WAN interface should be in Connection Manager. You click on the LTE modem name then click edit button IIRC. It should be there though.

Did you issue

Code: Select all

AT!ENTERCND="A710"

before adding the B2+B30 to the list? If so, maybe you need to change 1F to 0D instead.

[motrac]

You usually don't need to set a startup AT command but it appears your cradlepoint is overriding your band setting? The WAN interface should be in Connection Manager. You click on the LTE modem name then click edit button IIRC. It should be there though.

Did you issue

Code: Select all

AT!ENTERCND="A710"

before adding the B2+B30 to the list? If so, maybe you need to change 1F to 0D instead.

thanks, found it, there's a box checked that says "enable band 30"

[Yipzy]

thanks, found it, there's a box checked that says "enable band 30"

Ah. Exactly what I suspected. Hopefully you got it all sorted out now.

[motrac]

Ah. Exactly what I suspected. Hopefully you got it all sorted out now.

once again thanks,
because of your help i've learned so much about this modem and "AT" commands.

[Didneywhorl]

After you created band group 0F did you set it?

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AT!Band=0F

[motrac]

After you created band group 0F did you set it?

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AT!Band=0F

now i did, thanks!