Question: how can someone achieve this kind of coverage? What kind of antenna, dbi need to reach that far from the purple point to the others is about 25 to 30 kilometers? :
Standard antenna outperforming 5.8 dbi rak antenna : r/HeliumNetwork
How To Buy a Long Range WiFi Antenna – WirelesSHack
10 dBi Omni Antenna
Antenna 4.5 dBi / 6.5 dBi / 8.5dBi / 10dBi 868mhz LoRa for Helium HNT Miner Bobcat Nebra RAK Syncrob.it External IP65 Fibreglass LongFi Omni Directional Antenna - N Type Coax Female
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Antenna Gain Explanation
Third-party Antennas - Teltonika Networks Wiki
Uhf Rfid Carpet Antenna For Sports Systems High Quality 10dbi Linear Long Range Uhf Rfid Floor Mat Antenna Carpet - AliExpress
Proxicast - Compact High Gain 10 dBi Universal Wide-Band 4G/LTE 5G WiFi Omni-Directional Outdoor Pole/Wall Mount Antenna
WR-10 Waveguide Omni-directional Antenna, 90 GHz to 100 GHz Frequency Range, 0 dBi Gain, UG-387/U-Mod Flange
Long Range WiFi Antenna and Boosters – WirelesSHack