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EPISODE · Jun 13, 2026 · 10 MIN

Below the Noise Floor — Episode 3: Reading the Waterfall

from Below the Noise Floor

The waterfall is the defining feature of software-defined radio. This episode covers how to read it: what strong and weak signals look like, how to tell a voice signal from a digital mode from a CW transmission just by its shape, and how to use the waterfall as a real-time window into propagation conditions.

Episode metadata supplied by the publisher feed · Published Jun 13, 2026

The waterfall is the defining feature of software-defined radio. This episode covers how to read it: what strong and weak signals look like, how to tell a voice signal from a digital mode from a CW transmission just by its shape, and how to use the waterfall as a real-time window into propagation conditions.

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Below the Noise Floor — Episode 3: Reading the Waterfall

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This episode is 10 minutes long.

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This episode was published on June 13, 2026.

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The waterfall is the defining feature of software-defined radio. This episode covers how to read it: what strong and weak signals look like, how to tell a voice signal from a digital mode from a CW transmission just by its shape, and how to use the...

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