About the choice of AS923 frequency

Where am I supposed to find out what these frequency plans are for frequencies?
Can you let me know the pairing relationship between them and frequency points?
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Google comes up with many hits - mostly to the docs in TTN …

https://www.thethingsnetwork.org/docs/lorawan/regional-parameters/
https://www.thethingsnetwork.org/docs/lorawan/frequency-plans/

But overall it sort of doesn’t matter, these are the presets that TTN use, so changing them on your device will stop it from working properly and almost all firmware uses the regional base channels for the OTAA connection & then the stack sends the remainder of the settings.

Unless you are rolling your own firmware?

To that end, the WHY to your question will help us answer the right question.

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