Thanks Alex. I'm not too tech-savvy but I think I get how this could work. I don't know much about LoRa but if could handle the data in real time then it sounds ideal. I also think it should be possible to use the timing of spearated devices in in detecting the shot to triangulate the position of the shooter reasonably accurately, which would be very useful. I guess my problem is that I know what the sysyem woulld need to do and I have a load of ideas about what would be great, but I don't have the knoweldge to know what is possible or how to get it to work! I do however have a perfect test site to determine whether it is possible to set up a simple, cheap and effective real-time monitoring network for firearms-based poaching, in this case rhino poaching in South Africa. So...if anyone is out there who could help please drop me an email :) ahart@glos.ac.uk