Yesterday an anon posted an image like this remarking about it being old school back channel.
It still is.
There are channels between channels on the 11 meter band. Originally for remote control like old school garage door openers, model cars etc.
If you use an unlocked version of this or one set to tune with a VFO you can hit those channels. And if you go out of band (known as Free banding) you will find huge amounts of 'packet" info moving all day long.
You will likely also find cartel conversations in the space between CH40 and 10 Meter HAM band.
Been listening for quite some time but maybe someone here knows who may need to know.