MC7455 does not lock on to UK 5MHz Band 20

[stevenma]

@mlw , @Vianney

Hi Matt,

@mlw

I presume you have another device which is attaching to 3 on B20?

Yes, a Huawei B525-23a which attaches to Bands 1, 3 & 20 individually and will also CA Bands 3&20.

AT!LTEINFO? (just for Band 20)

From the router’s cellular status page:

@mlw

Re the CA point, it may well not show a CA status until you are to the point where the unit is attempting to access SCC’s and the network has subsequently allocated resources for (or the unit) to be able to state that it has access.

Yes, I understand that it’s the tower / network’s decision to invoke Carrier Aggregation. My issue though is that the modem isn’t communicating with the tower’s Band 20 as is apparent from the router’s cellular page.

I am starting to wonder, if you can’t see anything obvious, if the tower has an issue with Band 20.

Any other thoughts Matt?

Thanks,
Steve