The RFM95/RFM96 is the same RF Transceiver Module used on the Talk² Whisper Node LoRa. The module is based on the silicon from Semtech SX1276.
If you wish to build your own hardware to communication with a Talk² Whisper Node LoRa, or any other LoRa or LoRaWAN, this is the RF transceiver you should use.
915MHz - RFM95W-915S2
868MHz - RFM95W-868S2
433MHz - RFM96W-433S2
All technical details can be found on the datasheet: http://www.hoperf.com/upload/rf/RFM95_96_97_98W.pdf