I have a 900MHz LoRa device that I want to attach a more directional antenna to. I have a 2.4GHz corner reflector sitting around. I was wondering if I can replace the current omnidirectional antenna with this one.
Is it safe to do so? I read in LoRa documentation that running without an antenna can damage the equipment.
Also I heard of something called impedance mismatch but can not determine if that affects me or not in this case.
If I replace the antenna do you expect that I see a performance improvement given the antenna is rated for 2.4GHz and not 900MHz? If not could I shorten or lengthen the wire in the middle of the corner reflector to a different length so it works for 900 MHz better?
As an aside, do routers that transmit on both 2.4 GHz and 5 GHz use the same antennas for both? Is it because the frequencies are close to 2x of each other?