I’m aware of the TTN fair use policy and the ISM regulations in europe that only allow 14dBm (or 25mW) :). For a particular project, I’d like to extend the range towards a specific direction. I have thought about using 11 or 23 dBi YAGI antennas that can be sourced from digikey:
Does someone have experience with those antennas? I’d like to use them on the gateway just to listen. I’d love to have one 2.1dBi antenna for receive and transmit connected and one 11dBi (or even the 23dBi one though i think that’s an overkill) to receive signals from a specific direction.
Can it work to feed the signal of two different antennas to one HF port like an SMA connector? Are there strategies to avoid that the high-gain antennas sends? If not, I would just lower the transmit power of the gateway.
I have also read the antenna part I and II but I think long-range YAGI antennas are not covered there.