Actively experimenting with nRF24L01+
A lot of code, a lot of documentation, and finally, after many years, they are running. One sending, one receiving – beautiful!

After some more code, I’ve done a scanner.
After running for 12 hours, it looks like this:

You can see the Wi-Fi bandwidth of my router. And some signal from neighbors… (I have marked allowed WiFi frequencies). So I’ll recommend for nRF to use the channels > 90.
So, let’s restart the integrating and push the transmit button on the other board.



Interestingly, modules with PCB antenna are more powerful, than external antenna. Maybe they are better on the open air.