Unlikle @TMobile / @Starlink why doesn't Verizon want to give up its terrestrial spectrum for direct to device/D2C? Beams from satellites generally cover a much larger area than a single tower, meaning your capacity per Hz of bandwidth is spread out over a much larger area. Maximizing capacity in physical space is a function of increasing bandwidth and "cell" density. Of course, the major advantage of a satellite is that it can provide coverage to an area without the robust physical infrastructure required for terrestrial networks. The obvious downside is that the under-served areas that D2D mainly targets usually have less customers. Less customers = less revenue = less incentive for investment. Luckily, Starlink has plenty of residual capability to make this viable, and the demand for connectivity is high in areas that don't have it. But the big thing here is spectrum usage. In a dense area with plenty of infrastructure, the best use of spectrum is almost always for high density terrestrial networks. But not everywhere is a dense urban metropolis. The worst thing to see is when available spectrum, in an area that desperately needs coverage, goes underutilized. Even though the resource is there, it's either "owned" by someone else, or is too close to other systems to utilize it interference free via traditional methods. And this isn't just a problem in rural areas. The spacial complexity of the RF domain is an incredibly difficult thing to manage across frequency and time. This is why, for the future of human connectivity, we need the adoption of technologies like cognitive radio that make these decisions at the edge, and not on a piece of paper. This is why we're going to map out the RF spectrum in frequency, space, and time. To pave the groundwork for better, cheaper, and more reliable connectivity. C/acc

It's time to share my master plan for Fosa 🫡 Our mission? To rebuild wireless infrastructure from the ground up, and make global internet connectivity cheaper, faster, and unconstrained. Fosa will technologically preserve the Freedom of Speech for humanity.

See signal > click on signal > get system info

Mapping out RF in 3 dimensions: frequency, time, and space.

Raven already lets you query registered devices and systems associated to a certain frequency. Logging this data over several distributed Olympus nodes will be huge, especially in shared/congested bands.

Testing out the new maprad.io updates with Raven.

Imagine asking an LLM to build out a wireless deployment plan for you, and it returns with a spectrum availability comparison, cost, hardware recommendations, a link budget analysis, historical interference patterns, competitor analysis, and deployment location and coverage opts.

Post your favorite hardware iteration photos 👇

You should use a hackrf with Raven. Sweep times are fast enough to catch P25 TMS data while looking at 400MHz of BW. fosa-tech.com/software xitter.cf/fosatech/status/174207…