The LITTLE ANTENNA topic

Interested in what antennas people are using in their nodes. My personal interest would be antennas with some gain (low coverage area) that are reasonably vandal proof / water resistant but all contributions welcome.

In my ballooning experiments I have used the simple helical antenna, soldered directly onto the pcb. Works great, achieved a 360 km communication (at 6 to 12 km height…).
Google “junior iot challenge kaasfabriek” for info.

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I tested more than six indoor antennas. I prefer the second one.

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