I have two different Cradepoint CBA850s. I've tried configuring both so they'll lock on Band 13 on Visible's network. I finally got one to work (by trial and error of messing with the CBA850's config, I think anyway), but the other continues to use Band 5. When I go back into the dev console, I can see at!band has reset back to "00" (all bands) from "13". Looking at the CBA850's log, it looks like the following is where it's happening:
lte_sierra_provision_process() step:231, status:0
Fri May 26 09:32:15 2023|INFO|cp_stack_mgr|modem1: LTE Modem Plugging - msg: Setting band - status:231
In the CBA850 that is working correctly, at the same point, the following is logged:
Fri May 26 09:07:16 2023|INFO|cp_stack_mgr|INFO lte_sierra.c(1109) modem1: lte_sierra_provision_process() already at Auto, move along
Any ideas? Thanks!
UPDATE: Crap. It looks like the router that was locked on Band 13 also has somehow reset back to using all bands. Anyone have a clue on what would be causing the band on the modem to keep getting reset?
UPDATE 2: Here's some log entries when the modem gets switched from Band 13 back to 5:
Fri May 26 10:28:10 2023|INFO|WAN:9ace85d2|The cell id for the MC400LP6 (SIM1) on port modem1 is 43431440 (0x296b610)
Fri May 26 10:28:10 2023|INFO|WAN:9ace85d2|signal MC400LP6 (SIM1) on port modem1: 86%, RSSI:-82(dBm), SINR:10.2(dB), RSRP:-110(dB), RSRQ:-11(dB), RFBAND: Band 5
Fri May 26 10:28:29 2023|INFO|WAN:9ace85d2|signal MC400LP6 (SIM1) on port modem1: 64%, RSSI:-89(dBm), SINR:5.6(dB), RSRP:-117(dB), RSRQ:-11(dB), RFBAND: Band 5
MC7455/CBA850 Band lock being undone? SOLVED
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Re: MC7455/CBA850 Band lock being undone?
I think I might have figured it out. In the modem configuration on CBA850 (in the Connection Manager), you can enter AT commands. So far, it looks like by adding the "at!band=13" command in this field seems to be working.
For the sake of others, follow the usual steps of creating a "band reference" using the Device Console (band 13 in my case):
atterm
at!entercnd="A710"
at!band=13,"B13",0,1000
But instead of entering the command to lock to the newly created band (and reset the modem) in the Device Console, enter the command "at!band=13" (or whatever is appropriate in your case) into the AT Config Script field in the modem settings of the WAN Interface Profile in the Connection Manager of the CBA850.
For the sake of others, follow the usual steps of creating a "band reference" using the Device Console (band 13 in my case):
atterm
at!entercnd="A710"
at!band=13,"B13",0,1000
But instead of entering the command to lock to the newly created band (and reset the modem) in the Device Console, enter the command "at!band=13" (or whatever is appropriate in your case) into the AT Config Script field in the modem settings of the WAN Interface Profile in the Connection Manager of the CBA850.
