Greetings i just have a quick question regarding the RFD900x LR radio modems. Wich one is the air antennas? I’m guessing that the smaller ones are…
And i’d also like any setup guides, if possible!
I use the larger one on both sides. I got 4 of them in the kit. You´ll get better range with those.
Check out the documentation: RFD900 Radio Modem — Copter documentation
Also I’ve seen over 20km with the short antennas on the aircraft, and they will probably do more, just the long antennas on the ground unit.
The short ones require a ground plane. If you can provide a ground plane on your aircraft they are light and they work very well. If you cannot provide a ground plane, then use the long ones.
I’m sorry craig, but what do you mean by ground plane?