The RC-SM1276-868 module is designed based on SX1276.
The SX1276 incorporates the LoRaTM spread spectrum
modem which is capable of achieving significantly longer range
than existing systems based on FSK or OOK modulation. At
maximum data rates of LoRaTM the sensitivity is 8dB better
than FSK, but using a low cost bill of materials with a 20ppm
XTAL LoRaTM can improve receiver sensitivity by more than
20dB compared to FSK. LoRaTM also provides significant
advances in selectivity and blocking performance, further
improving communication reliability. For maximum flexibility the
user may decide on the spread spectrum modulation bandwidth
(BW), spreading factor (SF) and error correction rate (CR).