Project "Catellite"

I want to make a low-cost kit, using a DVB-S2 receiver, any “found” satellite dish and LNBF, and a modest SBC, cheap internet router or cheap mini PC, to handle downlink and decode for NOAA satellite communications – just enough to receive CAP/EAS alert information.

This will be connected to for a distributed open-source desktop or mobile emergency alert architecture I'm building, so that low latency and immediate alerts at any point in the US can be received from an authoritative and resilient source at the lowest cost possible.

It'll use either https://www.weather.gov/nwws/ or https://www.weather.gov/noaaport/ to receive messages, as per the “push” section on https://vlab.noaa.gov/web/nws-common-alerting-protocol/overview.

The “computer” side software will likely use openWRT, or any Linux, to package the suite and provide a convenient web UI and API.

I'm thinking of something like a distributed consensus network for validating first-to-report times for nodes on the network.

Notes for later:

• https://www.rtl-sdr.com/decoding-eshail-2-dvb-s2-realtime-in-linux-with-leandvb/ “Decoding Es’Hail-2 DVB-S2 Realtime in Linux with LeanDVB”
• https://destevez.net/2022/10/anatomy-of-blockstream-satellite/ “Anatomy of Blockstream Satellite”
• https://www.youtube.com/watch?v=RzQZNfoap1E “Wizball Music - High Score (Catellite)” by Martin Galway