RFM95 Datasheet, PDF (32/121 Pages) List of Unclassifed Manufacturers – Low Power Long Range Transceiver Module

RFM95/96/97/98(W)
4.1.4. Frequency Settings
Recalling that the frequency step is given by:
F_STEP =
-^F---^X---^O----^S---^C--
2¹⁹
In order to set LO frequency values following registers are available.
Frf is a 24-bit register which defines carrier frequency. The carrier frequency relates to the register contents by following
formula:
F_RF = F_STEP × Frf(23,0)
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