First Channel and Last Channel of CyFi

Question: What is the significance of the parameters First channel and Last channel in CyFi user module?

 

Answer:

This parameter controls the low limit and high limit  of the RF channel range used by the CYFISNP protocol to ensure regulatory compliance by preventing or reducing out-of-band RF emissions that may occur depending on RF circuitry design (for example, nonlinearities in an external power amplifier may cause out-of-band RF emissions).