Looks like hug of death strikes again!
"Like many older satellites, the POES satellites do not have thrusters to support a controlled reentry into Earth’s atmosphere at the end of their mission life. Instead, once passivated, they are safely powered down, placed in a non-operational state, and left in a stable orbit. Without onboard propulsion or significant atmospheric drag at their current altitude, NOAA estimates they will remain in orbit for roughly 150 years before gradually reentering the atmosphere and disintegrating."[1]
[1] https://www.nesdis.noaa.gov/news/legacy-orbit-noaa-decommiss...
But for the normal users - to be honest - most topics are too heavy on complex math. And there's no way to avoid it if you want results.
Most advanced radio stuff much more complicate than checking out a repo from GitHub and compiling it.
That being said last I used it extensively was v3 so maybe v4 is better. Did they get rid of thread per block and allow you to have a single thread service a sub signal chain? I remember that the number of context switches between threads, and balancing latency vs buffer sizes was a pain in the rear.
It's great fun for doing signal analysis, but I'd never want to try and implement a full-duplex communication system in production with it.
The AD9363 stock is only supposed to be 325mhz to 3.8ghz but stuff like the plutoSDR which uses it manages to get the transceiver all the way from 70mhz to 6ghz like the more expensive AD9361 used in the real USRP B210s
Benefit is you can transmit stuff too, not just receive unlike the RTL-SDR which is RX only
There a ton of devices that use 433Mhz. You can also extend rtl_433 pretty easily.
What I was _really_ hoping to read was my water meter. It transmits so infrequently, though, so it's hard get much of anything or even know if you're successfully receiving something more than noise.
For triangulation though, if you have a reference signal at a known location, TDoA (time difference of arrival) requires less hardware (just a single receiver at each location, e.g. an RTL-SDR). I don't know of any open-source software which does that though I've been slowly building some for my own use (it's pretty janky at the moment).
>Fast forward a few decades, next week is my wedding and that voice on the other side of the radio is...
I think I've seen too many rom-coms because I was sure this sentence going to end with "my fiance." : )
edit: I think it's just a dipole
It runs on an Orange Pi Zero 3 SBC.
Do note that if you purchase an RTL-SDR these days, you'll probably get a v4 which, at least as of last year, does not play out-of-the-box at all with the software available on the Ubuntu apt repos and the RTL-SDR drivers that ship with 24.04 out-of-the-box — there were some hardware protocol/interface changes between v3 and v4 that make the old drivers incompatible and you'll get a litany of misleading or non-specific errors if you try without downloading and installing the latest drivers from GitHub (or somewhere).
film42•2h ago
_whiteCaps_•22m ago