Today I have did some testing: Node: FiPy ABP transmitting a byte, blink immediately led for debugging after sending, listening for receiving, repeat every 10 seconds.
Both connected end to end with a coaxial wire (no antenna) and the wire also connected to an spectrum analyzer for sniffing with a T connector.
What I observed is strange:
- There are some 8 seconds between the node blinks (sending) and some activity is observed on Spectrum Analyzer.
- There are some 10 seconds between the activity observed on Spectrum Analyzer and the gateway shows that the package was received on internal web-interface.
- Even with direct connection through the coaxial wire, there are wide values of RSSI from -6 to -117.
- Even that, there are some packages that never are received (or shown as received) on gateway web interface.