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desertraven | 2 years ago

This is a cool project.

I bought both a HackRF and an Ettus USRP B210 years ago for playing with.

I am yet to actually do anything of interest! Anyone want to share anything cool they’ve done in the SDR world?

discuss

order

jcims|2 years ago

Those are both extreme overkill for the task but participating in ADSB networks for sites like flightradar.

I really enjoyed making antennas and capturing data from satellites.

Getting trunking receivers (eg unitrunker) to listen to local first responder radio.

Decoding pagers is fun

As others have said, decoding various devices that talk on the various ISM bands is interesting.

Just band surfing at night is a lot of fun imho. Finding random signals and trying to figure out what they are is cool.

op00to|2 years ago

I have a pm2.5 sensor that hooks to a weather station I don’t have. I am using a cheap SDR to grab the data over the air and dump it into a mqtt topic for consumption in home assistant. Standing on the shoulders of giants and all, but it’s still pretty neat.

heywire|2 years ago

I use rtlamr to receive and record my natural gas usage, and I wrote some code to receive my water usage from my water meter (though I’ve since moved that code to an Adafruit Feather w/ an RFM69 module).

hoppyhoppy2|2 years ago

I run a local Fire/EMS scanner feed for my county so people can listen in without a scanner or SDR of their own. It uses a bunch of directional antennas in the attic for best reception (I can't put up a giant mast antenna) connected to a bunch of Nooelec rtl-sdr dongles.

Unlike a traditional scanner which only monitors one frequency at a time, if two things are happening simultaneously then you hear them both. This would be annoying or unlistenable in a busier area, but in my area it works fine.

mikewarot|2 years ago

I put together a VOR navigation receiver in a GNU Radio flowgraph. It was cool driving around the local beacon and having it point the right way as I moved.

jjwiseman|2 years ago

Love that. Curious what kind of range did got (I assume not great).