08-10-2021, 06:41 AM
(08-10-2021, 06:16 AM)swiley Wrote: Has anyone poked around with the DSP on the modem? IIRC at least one LTE channel is inside the (33cm?) HAM band and the DSP code is floating around on github. I've skimmed over it, it's definitely some kind of SDR baseband firmware (unlike the "broadcom wifi firmware" which just sat between the MAC/PHY/PC and pushed buffers around.)
VERY VERY INTERESTING!
Truth is for whatever we are doing the future is fully user controlled SDR vs black box on-silicon components.
One problem though when the US is somehow tied to a project is that apparently ITAR rules prohibit uncontrolled distribution of SDRs capable of a certain sample rate.
https://en.wikipedia.org/wiki/Internatio...egulations
It would probably only apply to designed for purpose hardware and not to a hacked driver or firmware though.
It would probably end up like some kinds of encryption which is apparently also an IRAR restricted thing yet we in the FOSS community do not seem to see any problematic enforcement.