The glass etchant is probably not going to work. It's polycarbonate, not silica glass. Sand is interesting but maybe too coarse. Stuff like 1-10 micron industrial diamond power, silicon carbide/aluminium oxide blasting media is the bane of my existence when trying to clean shiny things :(
potatopotato
joined 2 years ago
There's already a startup trying to get the FCC to give them half of the 915mhz band (meshtastic, smart home stuff, ELRS, ham radio) for a pay to win GPS alternative.
Blue marble is essentially an open source Google Earth desktop application. Idk if it's exactly what you want but it's not terrible.
OsmAnd is the same thing for Android and iOS and it's absolutely wonderful.
Why do you cut the sweatpant cuffs off?
That's kinda what SAR sats do. They're using radio waves but they illuminate swaths of the planet with a big dish/array and then look at the reflections. LIDAR sats too.
Yeah that's the real answer...
Nextnav
https://docs.fcc.gov/public/attachments/DA-24-776A1.txt