Hi, I have confirmed I can operate my Node with DR0, DR1, DR2, and DR3 (with ADR=OFF).
HOWEVER, when I set DR to 4, perhaps one in twelve transmissions are delivered to my Rak7268CV2-Gateway. My Node is three meters distant from the Gateway. (observed in the Gateway dashboard - Packet Capture screen)
(I operate with AWS-IoT. I can watch Node data in my AWS-IoT console.)
Additionally, after it runs for a while, the Node crashes on the lmh_send() function. I have to reset the device, to resume / program it again.
All I did was slightly change the LoRaWAN_OTAA_ABP arduino example.
I set US915: LoRaMacRegion_t g_CurrentRegion = LORAMAC_REGION_US915;
I can compile and run the example (Arduino) application LoRaWAN_OTAA_ABP.ino on the Rak4630, with the DR set to DR_4. However, it is rarely successful to transmit payloads to a Rak7268cv2, located on the opposite side of my room.
When I set it to higher DR values, DR_5, … the Node is NEVER able to send to my Gateway.
My question is: Is my Rak4630/4631 capable of operating at DR_4 and higher?