rattlegram acoustic coupling

• 18 November 2025
• VHF,
• programming,
• emerging

I'm excited about RibbitRadio.org and Rattlegram. This post will collect some notes about this ARRL Technical Innovation Award Winner (2023).

For the BARC TechNet on 11/18/2025 here are some links I'll be asking people to try out sending and receiving Rattlegrams. Hopefully I can just share the link to this post on HAM.live and then people can click on whatever they want to dive into. During the NET I hope people will take turns sending and receiving messages so we can experiment, learn, and have fun as a group.

1. Free Rattlegram app for you iPhone
2. Free Rattlegram app for your android phone
3. Free web browser implementation that access your microphone via the browser: https://badkangaroo.github.io/

References:

1. Reddit "Is Ribbit Vaporware" discussion has lots of color and references.

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