Hello Weili,Yes, It is the Spread Factor.  RegardsSaverio

Hello Weili,I propose to evaluate the performances of two RF settings:First RF configuration:Data rate=200 kbpsFrequency deviation = 100 kHzChannel filter= 400 KHzDSSS = 16Second RF configuration:Data rate=100 kbpsFrequency deviation = 50 kHzChannel ...

Hello Weili,To improve communication distance in a very crowded environment, one suggestion is to use DSSS (Direct Sequence Spread Spectrum).Using Direct Sequence Spread Spectrum (DSSS) in a communication system can indeed improve the link budget. Th...

Hello Weili,If you don't want to control the turn ON and OFF of the TCXO by GPIO, no modifications or additional settings are needed.RegardsSaverio

Hello Weili,A1: We have a reference design which uses a TCXO for 169 MHz frequency, 27 dBm with external FEM. Here the link: https://www.st.com/en/evaluation-tools/stdes-wl3c4eew.htmlA2: The SNR of 8 dB is to give you an indication of the signal leve...