H-Tronic1618115 network antenna Directional antenna SMA 4 dBi

Probably the best bought 868MHz antenna so farIt needs a ground plane, otherwise the resonance and SWR are all over the place. Something like a tea-tray is perfect.That will give you an SWR of less than 1.2 at 868.1MHz.I cannot verify the gain - but subjectively, it appears better than another antenna claiming 2.5dB - so 4dB is possible.I have it connected to an ESP32 TTN gateway.

Used as LoRaWAN base-station antenna on EU 863-870 mHz. Works really well. Very strong mag base.