GNU Radio

#1

Post by tosh » Sat, Jan 15, 2022, 9:50 AM UTC

Re: GNU Radio

#2

Post by ggm » Sat, Jan 15, 2022, 11:21 AM UTC

Has always done a terrible job of selling itself. A $25 dtv receiver and a chickenwire antenna parabola and code your own satellite TV decoder, learn what radar guns emit, emulate a modem... maybe even shift to IR and do TV controls.. it's, latent in this stuff.

But the frontpage doesn't take you there.

Re: GNU Radio

#3

Post by mikewarot » Sat, Jan 15, 2022, 11:47 AM UTC

Have they fixed the incredible loss of features from the WX GUI yet, the QT widgets just didn't have anywhere near the same functionality last time I looked?

[Edit]The WX versions of FFT and Oscilloscopes were far, FAR better than their QT replacements.

Re: GNU Radio

#4

Post by minimilian » Sat, Jan 15, 2022, 11:57 AM UTC

mikewarot wrote: post #3

Have they fixed the incredible loss of features from the WX GUI yet, the QT widgets just didn't have anywhere near the same functionality last time I looked? [Edit]The WX versions of FFT and Oscilloscopes were far, FAR better than their QT replacements.

You're probably talking about something else, but it took me a while to realize that many features are hidden behind a right (or is it middle) click.

Re: GNU Radio

#5

Post by sh4un » Sat, Jan 15, 2022, 12:53 PM UTC

Weird. Was looking at this program yesterday and the website was all over the place.

Re: GNU Radio

#6

Post by wildzzz » Sat, Jan 15, 2022, 1:15 PM UTC

There's a similar SDR toolkit out there called RedHawk. Its open source but heavily funded by the NSA so you can imagine that it has specific SIGINT applications in mind. However, you can still connect it to an RTL-SDR and play around with the components in a similar manner.

https://github.com/RedhawkSDR/redhawk

Re: GNU Radio

#7

Post by idealmedtech » Sat, Jan 15, 2022, 1:20 PM UTC

Our satellite team in college used GNURadio to modulate and demodulate our radio signals, and to automate the entire pass (in conjunction with our mission operations team). I remember at that time (2016-2018), there was an absolute dearth of information on something as simple as demodulating GMSK, much less OQPSK. The given blocks for these modulation types never worked, so we had to build out custom blocks in C++ to have a chance at interacting with an actual spacecraft in flight (with all the goodies like active Doppler compensation etc)

Re: GNU Radio

#8

Post by vkoskiv » Sat, Jan 15, 2022, 1:27 PM UTC

This reminds me of a fun story. A few years ago at a cool lan + demoparty event called Instanssi they had a local FM radio station dedicated to the event. It was then revealed that hidden in that FM transmission was the private key to a litecoin wallet containing some coin. I set about to try and extract the hidden message, but didn't succeed before someone else armed with GNU radio had already decoded the SSTV image from the sideband broadcast. It was a fun challenge, and the person who won taught me a bit about GNU Radio. An amazing piece of software, and a fun memory!

Re: GNU Radio

#9

Post by szopa » Sat, Jan 15, 2022, 1:41 PM UTC

ggm wrote: post #2

Has always done a terrible job of selling itself. A $25 dtv receiver and a chickenwire antenna parabola and code your own satellite TV decoder, learn what radar guns emit, emulate a modem... maybe even shift to IR and do TV controls.. it's, latent in this stuff. But the frontpage doesn't take you there.

What are some good resources to start playing with SD add an amateur?

Re: GNU Radio

#10

Post by oolonthegreat » Sat, Jan 15, 2022, 1:48 PM UTC

I especially appreciate the "Simulink-like" block based visual coding style, I think it's a more intuitive alternative than textual coding in the context of systems and blocks etc.

also love the convenience of simply "adding a slider" whereas in matlab for example you have to build an "app" and add callback functions and do weird stuff to change the block parameters