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RTTY DEMO 012710.wmv

Kelly Klaas · 34.1K views · 2010-01-28 · 3:02

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Overview

A short demonstration of radioteletype (RTTY), a digital communication mode used in amateur radio, showing what the signal sounds like.

On Hacker News

HN commenters link it as a sound sample when discussing data-over-audio projects that resemble RTTY.

Discussed on HN; no positive recommendation is recorded in this export · HN mentions 2021–2025

Topics

Electronics & circuit designInformation theory & signal processing
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rttyham radiodata over soundteletypemodulation

What people said

nickcw · 2025-02 · Reference

It sounds quite nice. It is also about the same bitrate as RTTY which was invented in 1922 and is still in use by radio amateurs round the world. Here is what that sounds like [VIDEO] Not as musical but quite similar

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hugs · 2023-01 · Reference

I don't have the skills of the person who decoded the signal... however, if you get your ham radio license and start playing with the various digital modes, you'll start to recognize the various sounds of different modes. An APRS data packet [1] has a very unique sound. Same with with RTTY [2]. Our brains are really good at pattern matching if they're exposed to a pattern enough times. Obviously, you'd still need a computer to decode those signals, but the "sound" of the signals can give you very good headstart. [1]: [LINK] [2]: [VIDEO]

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tdeck · 2021-04 · Reference

Wow it sounds like RTTY (radioteletype): [VIDEO] I suppose there are only so many ways to modulate a data signal.

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Sources

Video by Kelly Klaas, played through YouTube.

Data and selection notes

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