grahamlthompson - 3 hours ago » ...Powerline signalling is used for many mission critical installations (you need to expand your horizons ). ...
I spent 6 years working in telecomms so fortunately my horizons are fairly broad Since we were talking within the narrow confines of the ethernet protocol, if mission critical systems ever adopt ethernet transmission using homeplugs as currently designed and selling for 20+ quid then I will come back here and (as politicians say) eat my hat