I am trying to use the LoRa Serial kit to transmit base corrections between two RTK Postcards. I am struggling to get consistent communication. I am running V2.3 RTK Everywhere on the postcards and V6 on the LG290P. The LoRa are connected directly through the UART3 on the Postcard. The LG290P does…

[image] pauldixon: The LG290P does not support 57600 bps on the UART3 undocumented but reliable. .. $PQTMCFGUART,W,3,57600*34 TCIII did it & solved.

Thanks @bamarcant but I don’t have an issue (I don’t think) with using 115200 for my UART3. Just with permanently upping my airspeed on my LoRa. I’m a rookie at this stuff so happy to be corrected.

Ryan ( @AORPLS ) can give you clarifications on the matter … Regards

If I recall and it’s been a while there was something to do with forcing it to write the config multiple times for airspeed to stick.

@bamarcant That is correct. I have two LG290P Rovers set to 57600 baud on UART3 for receiving incoming RTCM3 messages from my Postcard Base Station that is transmitting on UART3 at 57600 baud. TCIII

I know there has been debate on whether the LG290P Quectel’s are compatible with 57600 baud but now the RTK Everywhere v2.3 says that 57600 is out of range. You can only have 9600 or 115200 (or higher). The only thing I have found for the airspeed to stick is to change the underlying parameters - b…

Permanent Change to Airspeed on LoRaSerial

Wireless & IoT LoRa (Long Range)

bamarcant January 7, 2026, 8:55am 2

undocumented but reliable...

$PQTMCFGUART,W,3,57600*34

TCIII did it & solved.

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Permanent Change to Airspeed on LoRaSerial

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