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Lora-net / LoRaMac-node

Reference implementation and documentation of a LoRa network node.
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FSK / GFSK #417

Closed GrumpyOldPizza closed 6 years ago

GrumpyOldPizza commented 6 years ago

The implementation for SX1272/SX1276 uses FSK modulation for the EU868 DR_7.

Looking at AN1200.23 (SX1272) and AN1200.24 (SX1276) it states that GFSK with BT 0.5 is supposed to be used.

The new SX126x driver in the develop branch uses GFSK with BT 1.0.

Looking at the regional specs (1.0.2 and 1.1) it wildly mixes FSK and GFSK, but does not specify BT at all.

What is the proper setting for EU8686 DR_7 ?

mluis1 commented 6 years ago

Thanks for the report.

The right value to be used is BT 0.5. Please not that the impact using a BT 1.0 is minimal.

We will correct the value to 0.5.