The MessengerPi is a messenger that can transmit messages over a distance of up to 3 miles. It's also possible to order a walkie-talkie, but this is expected to offer a significantly shorter range.https://www.notebookcheck.net/MessengerPi-Messenger-and-walkie-talkie-based-on-the-Raspberry-Pi-provides-communication-over-up-to-3-miles.767667.0.html
"over up to 3 miles"? Which is it?
Looks like 1000 feet with current antenna/ power output.
Looks like its 2.4 ghz
If it was line of site, you could go very far!
Ohhh, 1000 feed used for talking.... —it must be a digi mode.... And 3 miles for text messages.
Over a distance. That distance is up to 3 miles. The syntax is correct.