Datasheet

Because the data is being sent to address #1, but #1 is not acknowledging that data.

If you have the server running, with no clients, it will sit quietly:

Turn on the client and you'll see acknowledged packets!

https://learn.adafruit.com/adafruit-rfm69hcw-and-rfm96-rfm95-rfm98-lora-packet-padio-

breakouts

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