I am just getting into the field of UAVs, telemetry, antennas etc. and the following came up:
Recently I had some trouble getting a stable signal with the Pixhawk 433MHz-Telemetry modules with the standard dipole antennas. Therefore I did some research about how range extension within the standard power of 10mW, including the Antenna Tracker - Thread above and the upcoming diversity receivers like Hobbyking Quanum Overlord:
I really like the concept, since there aren't any moving parts like on a tracker. Therefore I did some research about telemetry modules in the 433MHz-band that utilize that concept but wasn't able to find any.
That lead me to the questions:
Are there any systems in the 433MHz-band that utilize the concept of diversity receivers?
Do I overlook a physical reason why there aren't any such systems?
I really appreciate your advice.
After some more research I came across the awesome Pharos Antenna project:
5.8 MHz seems to be more suitable since the antenna systems have a small form factor, reducing the mechanical challenges.
Does anyone have a tip about a comparable system like the Pharos antenna compatible with Pixhawk?