Hi everyone, I have two outdoor gateways, one is DLOS8 and the other one is Mikrotik Ltap LR8 LTE. For both I have same antenna installed.
What I don’t understand is why with the same node in my hand ( Browan GSP locator), when i am in the coverage of Mikrotik, the node work properly and send every 30 seconds the position updated, but when i am in the coverage of DLOS8, the node send rarely its position updated ( even after 2 Hours).
What would be the difference?
Thank you,
Paolo
The node should send data every 30 seconds independently from the gateways-weather gateways collect it or not. You can check it by tracking the gateways “live lorawan frames” screen.
Open both gateways’ live screen, watch them. First put your device into the DLOS8’s coverage area, count the uplinks. Second put your device into the Mikrotik’s coverage area and count the uplinks. Compare them. If numbers are not close each other, I say one gateway has not configured properly. Check your gateways lorawan channels.
Thank you for your reply.
Below there is the log of DLOS8.
Do You see anything to worry about?
I see 100 CRC fail
Logread Error:
Logread RxTxJson:
{“stat”:{“time”:“2022-04-07 10:07:17 UTC”,“lati”:41.914296,“long”:12.517050,“alti”:-52,“rxnb”:0,“rxok”:0,“rxfw”:0,“ackr”:0.0,“dwnb”:0,“txnb”:0}}
{“stat”:{“time”:“2022-04-07 10:07:47 UTC”,“lati”:41.914358,“long”:12.517129,“alti”:-63,“rxnb”:0,“rxok”:0,“rxfw”:0,“ackr”:0.0,“dwnb”:0,“txnb”:0}}
Logread REPORT:
################## Report at: 2022-04-07 09:57:17 UTC ##################
################## Report at: 2022-04-07 09:57:47 UTC ##################
That may indicate that you are too close, overloading the gateway’s receiver and causing corrupted packets.
Look at the RSSI’s of packets that come in, you want to see things between say -120 and -60
I’m a little confused. Yes, the sensor is close to the gateway: this means that there is a huge packet loss?and this is why I don’t see every 30 seconds good packets received?
I have another similar sensor that is moving a little far from the gateway but it doesn’t send packets every 30 seconds ad well!
The thing I see is that always for both devices the SF=12, never change.
How would it be possibile to change randomly the SF? Where is his setup?
Thank you, Paolo
You need to be around 2M away from the antenna or lower your power output a lot. If you are so close to the Antenna, you should also move away from SF-12 and set it up to SF-7. SF12 takes a lot more of air-time. It depends if your device supports ADR or if you need to configure the firmware to do so or configure it to use only SF7. Sometimes it’s specified as DataRate - DR0 to DR5 (which is sort of the same but not quite)
Thank you.
Where I could change the SF sometimes?
on the device itself if it does not support ADR. If it supports ADR you need to configure your Device-profile accordingly
