Today’s #opensource #digital #radio uplink work in the lab is documented in the image below. Our uplink design is called Opulent Voice and is a big step forward for open source digital voice modes. Thank you to all our volunteers who are helping make work like this possible.

A triptych of three images. The top one is the GNU radio flowgraph defining the Opulent Voice transmitter test for today. We are adding push to talk functionality. The bottom left is a photo of the lab setup, wtih an Optimized Tomfoolery RTL-SDR and a Stringfellow resistive splitter. The bottom right is the results on the spectrum analyzer.
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