Hi folks, I'm setting up my telemetry using 433 MHz modules (the RC Timer knockoff variant). I solved the problem of high noise on the local radio by using my own linear 3v3 regulator and a bluetooth module for communication. Now the noise is on the same level as on the remote module, but the RSSI is much lower here:This picture was taken with the module connected to the computer, the noise spikes are caused by USB. But you can see here that the local RSSI is way lower than the remote one. The local module was on my desk, the remote one on my bed 2m apart.
I already tried another stronger power source, so it is not an issue with a too weak supply. Both modules were set to the same transmitting power (20dBm I think).
I also tried swapping the antennas (one is a rubber ducky, the other a lambda/4 monopole), nothing changed.
I would be grateful for help!
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