RFM92 Datasheet, PDF (22/126 Pages) List of Unclassifed Manufacturers – Low Power Long Range Transceiver Module

RFM92W/93W V3.0
The RFM92W/93W are equipped with both standard FSK and long range spread spectrum (LoRa^TM) modems. Depending
upon the mode selected either conventional OOK or FSK modulation may be employed or the LoRa^TM spread spectrum
modem.
3.1. LoRa^TM Modem
The LoRa^TM modem uses a proprietary spread spectrum modulation technique. This modulation, in contrast to legacy
modulation techniques, permits an increase in link budget and increased immunity to in-band interference. At the same
time the frequency tolerance requirement of the crystal reference oscillator is relaxed - allowing a performance increase for
a reduction in system cost. For a fuller description of the design trade-offs and operation of the RFM92W/93W please
consult Section 4.1 of the datasheet.
3.2. FSK/OOK Modem
In FSK/OOK mode the RFM92W/93W supports standard modulation techniques including OOK, FSK, GFSK, MSK and
GMSK. The RFM92W/93W is especially suited to narrow band communication thanks the low-IF architecture employed
and the built-in AFC functionality. For full information on the FSK/OOK modem please consult Section 4.2 of this document.
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