One IN865 Channel(Freq: 866155000) Not Receiving Uplinks

gegajof 5
Viewed 55

IN865 has 8 channels (screenshot attached).
image.png

But on frequency 866155000, I do not receive any uplinks in v4.
The exact same hardware setup (same node + gateway) does receive uplinks on this channel in ChirpStack v3.

Important Notes:

All config are defaults.
Node uses Class C
I am running two separate instances: one for v3 and one for v4.15.0.
They use different domain names.
I simply change the domain in the UDP forwarder URL to switch between v3 and v4 in Gateway.
Uplinks and downlinks succeed on both versions.
Only chirpStack v4 shows issues with Not Receiving Uplinks on IN865 Channel(Freq: 866155000).

troubleshooting configuration chirpstack
2 Answers

Looks like you have a configuration error (missing 0):

The screenshot shows 86615500 (~ 86.6 MHz), but according to the text, it should be 866155000.

Orne Brocaar621

Thanks, and sorry for that silly mistake, and wasting your time. I actually tried 2 to 3 times to get issue, but I didn't recognize, this issue, and thanks for support.

gegajof•

Hi,gegajof
According to TTN the IN865 only has 3 frequency: 865.0625 / 865.4025 / 865.9850.
https://www.thethingsnetwork.org/docs/lorawan/frequency-plans/
The additional 5 frequency you provided: 865.2325 / 865.5725 / 865.7425 / 865.9125 / 866.1550
are these specified by the LoRa Alliance, or are they defined by the Indian government?
What is the link to the related documents? Thank you for your reply.

rimelink14

Other 5, is not any official mentioned Frequency Bands, IN865 range is 865Mhz-867Mhz, you can choose any 5 uplinks Frequency considering to Bandwidth.

gegajof•

Thank you for your reply. We really hope that IN865 has an official standard or an industry-defined 8 frequencies.

rimelink•
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