AM demod looks simple on the surface, but under the hood it’s doing a couple of neat little tricks. If the built-in AM demod block vanished overnight, you’d rebuild it…
These two get mixed up all the time in GNU Radio because they sound similar but solve slightly different problems. I’ll explain them intuitively first, then a bit more technically,…
Here are some open-source GNU Radio flowgraphs / projects on GitHub that you can study or adapt when you want to choose between different SDR hardware sources (e.g., RTL-SDR, USRP,…
Is there push button block in GNU Radio Companion? Yep — there is 👍 In GNU Radio (QT GUI) you’ve got a couple of button-style options, depending on what behavior…
Converting a Python GNU Radio block into C++ is very doable, but it’s not a mechanical translation — you’re moving from a runtime-defined block to a compiled, typed one that…
Yes — there are several ways to show text on screen in GNU Radio based on the value of a variable, and the best method depends on where the variable…
My GNU Radio Companion GRC file that plays multiple music chords: https://www.astronomy.me.uk/wp-content/uploads/2025/12/BAA-GNU-Radio-Meeting-Exercise-Chord-Selector-201225_GRC.zip Video showing the above GRC in action: My AM radio player (users can select from recorded IQ file…
To change a C major chord into a D major chord, you need to multiply the frequency of each note by (2^{2/12}) (the twelfth root of two raised to the…
Hi Andy, https://www.astronomy.me.uk/wp-content/uploads/2025/11/B210_stats.grc_.txt https://www.astronomy.me.uk/wp-content/uploads/2025/11/baa_seminar_USRP_IF_RF.grc_.txt The BAA seminar flowgraph won’t work without some further modules (created by Marcus Leech). I can explain this to you. The B210 fg is what I…
I was using a screen recorder (Debut) to record a Microsoft Teams meeting tonight. However second half lost its sound, which occurred after I ran a GNU Radio Companion script…
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