Help With MC7455 Changing Channel and Band

IoT Modules MC/EM Series
1

Hello!

I am trying to change my band to B2, I can see it in the list i think but when I try to change it does not work.

Here is my !BAND query,
AT!BAND=?
Index, Name, GW Band Mask L Band Mask TDS Band Mask
00, All bands 0002000007C00000 00000100330818DF 0000000000000000
01, Europe 3G 0002000000400000 0000000000000000 0000000000000000
02, North America 3G 0000000004800000 0000000000000000 0000000000000000
06, Europe 0002000000400000 00000000000800C5 0000000000000000
07, North America 0000000004800000 000000000300185A 0000000000000000
08, WCDMA ALL 0002000007C00000 0000000000000000 0000000000000000
09, LTE ALL 0000000000000000 00000100330818DF 0000000000000000

                                                   0000010000000000 - B41
                                                   0000000020000000 - B30
                                                   0000000010000000 - B29
                                                   0000000002000000 - B26
                                                   0000000001000000 - B25
                                                   0000000000080000 - B20
                                                   0000000000001000 - B13
                                                   0000000000000800 - B12
                                                   0000000000000080 - B8
                                                   0000000000000040 - B7
                                                   0000000000000010 - B5
                                                   0000000000000008 - B4
                                                   0000000000000004 - B3
                                                   0000000000000002 - B2
                                                   0000000000000001 - B1
                                  0002000000000000 - B8  (900)
                                  0000000004000000 - B5  (850)
                                  0000000002000000 - B4 (1700)
                                  0000000001000000 - B3 (1700)
                                  0000000000800000 - B2 (1900)
                                  0000000000400000 - B1 (2100)

I actually want to cycle through a few different bands to see which on is the best but any push in the right direction would be helpful!

2

Do you want to lock the modem to specific band(s)?
You can create a new index with a limited band mask, it is described in the AT guide. (at!band)

3

Yes, so would the command be something like this?

at!band=0a,“B2”,0,0000000000000002

Where do I get the last number in that command?

4

You add together the bands you want.
0000000000000001 + 0000000000000002 = 0000000000000003

which would enable B1 and B2.

5

Thanks!

So would the command I put above only enable band B2?

6

AT!BAND=<new band index>,<descriptive title>,<3G band mask>,<LTE band mask>

Here is a specific example for enabling B4+B13

AT!ENTERCND=”A710”

AT!BAND=10,"B413",0000000000000000,0000000000001008

OK

at!band=10 //select new band index with B4/13 enabled

OK