I figured out that I have packets on channel 0 (so 1897.334 MHz) by usage of other tools. Yet, I could not choose channel 0 in this tool. In my cloned version I added it by simply changing the range of the channels to also include 0 and then I was able to pick up the packets.
So, bug: there should be the possibility to pick up the packets in the first channel of DECT.
I figured out that I have packets on channel 0 (so 1897.334 MHz) by usage of other tools. Yet, I could not choose channel 0 in this tool. In my cloned version I added it by simply changing the range of the channels to also include 0 and then I was able to pick up the packets.
So, bug: there should be the possibility to pick up the packets in the first channel of DECT.