RTL-SDR Decoding ALERT

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Hi,
I am trying to get the following project going to decode a flood warning ALERT Protocol using an RTL-SDR. GitHub - cparker/udfc-node: Node.js code for filtering data gathered from nearby weather stations into JSON - SignalsEverywhere: Investigating USGS Gaging Stations and their GOES Satellite Connection
I was wondering if anyone has experience with Minimodem and the RTL-SDR and could help me with the decoding. I have got it to a point where I can see data, but it is decoding incorrectly.

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Hey @Adam17419, Welcome back to the forums!

Unfortunately, I don’t have much experience at all with Minimodem or RTL-SDR, I would offer some resources but it seems you already have some good ones!

Perhaps one of our active forums members will have done something similar before. Curious to see!

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Check the baud rate of the ALERT protocol you’re decoding (e.g., 300 baud for some weather station signals). Use the -r flag in Minimodem to specify the rate, e.g., minimodem -r 300.

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Thanks @lia262073 I’ve been using 300 baud, but i have not had any luck unfortunately. I will keep persevering.

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Hey @Adam17419,

The SignalsEverywhere link you provided references another project written in Python to do this kind of thing:

Have you looked into this at all? Depending on how far down the udfc-node rabbit hole you have gone, and your specific requirements this could potentially be an easier option for achieving this?

Hope this helps! :slight_smile:

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Thanks Samuel. GOES-R is a different transmission type and a different message protocol to what I am trying to decode.