It’s a project to build a database of things that can be used to determine your location in the absence of GPS. E.g. if you know the locations of some wireless access points that your laptop can see, you can make an educated guess as to where you are. BeaconDB is a user contributed database of this information, to rival the closed services offered by commercial companies (like Google and Apple).

BeaconDB attempts to do all of this in a privacy preserving way.

The antenna that comes with the heltec v3 isn’t very good, you can get much better range even with a cheap antenna. I got an ilabs one for £5 and can reach nodes a about 5km away (I am part way up a hill though)

Previously you got 10,000 free listings a month on private seller accounts, now it’s 300. Which is plenty for actual private sellers, but businesses operating as private sellers will have to start paying for their listings