Martin Brown wrote:
the mains meter is right in the core of the house and there is no mobile
signal to be had there for love nor money.
Are you oop north? there's a dedicated 400MHz network covering DNO areas
15-18 & 23
https://en.wikipedia.org/wiki/Distribution_network_operator#/media/File
istribution_Network_Operators.PNG
elsewhere, mesh networking to neighbouring meters with better mobile
signal is an option.