Thanks, I've been tinkering some more since my last post, and am starting to understand what I'm seeing.
I'm using a Smarty Unlimited SIM (Three's network), and have identified my cell tower in cellmapper. It's broadcasting on bands 1, 3 and 20.
I am using a Macbook, and have found a
Python tool which I am assuming does the same job as LTE-H Monitor with regards to band locking. (I haven't yet tried getting LTE-H Monitor running on my Mac).
Am I correct in thinking that carrier aggregation only applies to the download, and the upload will only ever use a single band?
I haven't been able to recreate my 100+ Mbits/s downloads from my first tests last night, but locking to bands 3 (15MHz bandwidth) and 20 (10MHz bandwidth) is giving me the best results, with downloads typically in the 40-100 range, and uploads around 15-25 (but they do seem to be dropping as more people wake up this morning...).
My SINR is typically only around 12-13dB though, so I need to try and find a better location (e.g. in the loft). My previous USB modem was acheiving 4-5dB more than that.