Thanks for all the great info, Neil, and sorry I haven’t been responding sooner. Right now we’re focused on getting the Adafruit FONA shield to work. It’s 2G but there are libraries, etc. which makes it much simpler for us to work with since we’re not engineers. We’re trying to keep it simple. This is my dissertation research and the WSN is only one aspect of the study so I’m pretty slammed trying to get up to speed on the Arduino side of the house. My advisor is doing most of the programming, etc. then once we get a prototype data logger I will build up the rest of them. I will try to keep you informed as much as I can. Thanks again.