The hollybro 0.1 watt reliably transmit rtk data, the 1 watt system transmits crap data. I have .ubx file to prove it where I the hollybro, then simply swap radios, and the data foes to shit.
Isn't the SparkFun LoRaSerial Kit 1W suppose to be a functionally eqz 1W version the the hollbro 0.1
Somewhat, there are more config modes and whatnot with the LoRaSerial kit https://docs.sparkfun.com/SparkFun_LoRa … ick_start/
You might need to alter the serial settings https://docs.sparkfun.com/SparkFun_LoRa … _commands/
Which operating mode is it in? https://docs.sparkfun.com/SparkFun_LoRa … ing_modes/
Point to Point
I was hoping to be able to see the parameter setup vai teratem on the holybro so could compare it to 1 w lora, but no joy. Frankly I have no idea what setting to change with this unit, but here are the settings .
ATI0
AT-AirSpeed=0
AT-AutoTune=0
AT-Bandwidth=500.00
AT-ClientFindPartnerRetryInterval=3
AT-CmdVC=0
AT-CodingRate=8
AT-CopyDebug=0
AT-CopySerial=0
AT-CopyTriggers=0
AT-DataScrambling=0
AT-Debug=0
AT-DebugDatagrams=0
AT-DebugHeartbeat=0
AT-DebugNvm=0
AT-DebugRadio=0
AT-DebugReceive=0
AT-DebugSerial=0
AT-DebugStates=0
AT-DebugSync=0
AT-DebugTraining=0
AT-DebugTransmit=0
AT-DisplayRealMillis=0
AT-Echo=0
AT-EnableCRC16=1
AT-EncryptData=1
AT-EncryptionKey=1C452DE2E18C7D450A1BE6ACBD226B26
AT-FlowControl=0
AT-FramesToYield=3
AT-FrequencyHop=1
AT-FrequencyMax=928.000
AT-FrequencyMin=902.000
AT-HeartBeatTimeout=5000
AT-InvertCts=0
AT-InvertRts=0
AT-MaxDwellTime=400
AT-MaxResends=0
AT-NetID=54
AT-NumberOfChannels=50
AT-OperatingMode=1
AT-OverHeadtime=10
AT-PreambleLength=8
AT-PrintAckNumbers=0
AT-PrintChannel=0
AT-PrintFrequency=0
AT-PrintLinkUpDown=0
AT-PrintPacketQuality=0
AT-PrintPktData=0
AT-PrintRfData=0
AT-PrintTimestamp=0
AT-PrintTxErrors=0
AT-RTSOffBytes=32
AT-RTSOnBytes=256
AT-SelectLedUse=4
AT-SerialDelay=50
AT-SerialSpeed=57600
AT-Server=0
AT-SpreadFactor=9
AT-SyncWord=18
AT-TrainingKey=537061726B46756E547261696E696E67
AT-TrainingTimeout=1
AT-TriggerEnable_31-0=0
AT-TriggerEnable_63-32=0
AT-TriggerWidth=25
AT-TriggerWidthIsMultiplier=1
AT-TxPower=30
AT-TxToRxUsec=657
AT-UsbSerialWait=0
AT-VerifyRxNetID=1
OK
Did you ever get the SparkFun LoRaSerial radios working with RTK? I’ve tried and tried, and it’s not reliable.
I posted about this in the GPS forum: viewtopic.php?f=116&t=60898
Not yet, I have an idea or two, but its just uneducated speculation. The 0.1 watt Hollybro’s work like I would expect since I also own a pair of those. I’m wondering if there is some sort of power amp for those to kick it up to 1 watt. Your description of performance sounds like the problems I’ve experienced, I did notice that supplying power via the usb port does help some of the symptoms, but does not fix the data probelms,
In a single second, this is the data that is sent to the radio. The data was obtained by bluetooth connection to the base station into my laptop and recorded using u-center packet viewer.
18:00:55 R → 74 NMEA-GNRMC
18:00:55 R → 89 NMEA-GNGGA
18:00:55 R → 63 NMEA-GNGSA
18:00:55 R → 65 NMEA-GNGSA
18:00:55 R → 55 NMEA-GNGSA
18:00:55 R → 63 NMEA-GNGSA
18:00:55 R → 47 NMEA-GNGSA
18:00:55 R → 72 NMEA-GPGSV
18:00:55 R → 72 NMEA-GPGSV
18:00:55 R → 46 NMEA-GPGSV
18:00:55 R → 72 NMEA-GPGSV
18:00:55 R → 59 NMEA-GPGSV
18:00:55 R → 53 NMEA-GPGSV
18:00:55 R → 72 NMEA-GLGSV
18:00:55 R → 72 NMEA-GLGSV
18:00:55 R → 33 NMEA-GLGSV
18:00:55 R → 72 NMEA-GLGSV
18:00:55 R → 72 NMEA-GLGSV
18:00:55 R → 31 NMEA-GLGSV
18:00:55 R → 72 NMEA-GAGSV
18:00:55 R → 46 NMEA-GAGSV
18:00:55 R → 72 NMEA-GAGSV
18:00:55 R → 54 NMEA-GAGSV
18:00:55 R → 31 NMEA-GAGSV
18:00:55 R → 72 NMEA-GBGSV
18:00:55 R → 72 NMEA-GBGSV
18:00:55 R → 46 NMEA-GBGSV
18:00:55 R → 64 NMEA-GBGSV
18:00:55 R → 42 NMEA-GBGSV
18:00:55 R → 20 NMEA-GQGSV
18:00:55 R → 62 NMEA-GNGST
18:00:55 R → 25 RTCM3-1005
18:00:55 R → 144 RTCM3-1074
18:00:55 R → 158 RTCM3-1084
18:00:55 R → 86 RTCM3-1094
18:00:55 R → 144 RTCM3-1124
Ok, I’ve tried upping the data rate to 115200, turning off the encryption, point to point, to multpoint with server bit set on the rtk base unit, of course playing with the factors I mentioned before nothing makes it work. I set it up with the holybro radios @ 57600, get reliable data. not so with the LoRa serial. So I was told by support to try changing some of the configurations, I did those that made any sense to me, they don’t work.
i submitted an issue about this to the github firmware repo.