The channel mask (ChMask) encodes the channels usable for uplink access as follows with bit 0 corresponding to the LSB:
Bit#
Usable channels
0
Channel 1
1
Channel 2
…
…
15
Channel 16
Table 5: Channel state table
A bit in the ChMask field set to 1 means that the corresponding channel can be used for uplink transmissions if this channel allows the data rate currently used by the end-device. A bit set to 0 means the corresponding channels should be avoided.
The order relevant for ADR is communicated to the node in the join accept (or should be programmed correctly when using ABP). The gateway ordering of channels is not related to the order used for a node. The only requirement is to use matching frequencies
Yes, I have some problems … the node usually sends information every 30s the console shows an “activation” when I start making uplinks shortly after I stop receiving data …
The node and gateway are next to each other.
I try to find out if I have something defective or I am going beyond the limits of TTN.
Realistically solving problems like this is done by making the node give a log of what it tried to do, and comparing that to a log of what the gateway & network did in response.
