『Below the Noise Floor』のカバーアート

Below the Noise Floor

Below the Noise Floor

著者： James
無料で聴く

Below the Noise Floor is a self-education project turned podcast. One licensed amateur radio operator learning HF radio and AetherSDR from the ground up - the bands, the waterfall, the voice chain, the digital modes, the antennas - and sharing the process. These episodes are mostly AI-generated content built around real curiosity and real equipment. If you are new to HF or new to software-defined radio and want something that starts from zero and builds methodically, this might be exactly what you were looking for.

© 2026 Below the Noise Floor
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  • Below the Noise Floor — Episode 5: "Receiving Voice: SSB and AM"

    Below the Noise Floor — Episode 5: "Receiving Voice: SSB and AM"
    2026/06/27
    SSB voice is the dominant mode for human conversation on HF, but it sounds wrong until you tune it correctly. This episode covers upper and lower sideband, why the convention exists, how to tune a voice signal by ear, and how to use AetherSDR's mode and bandwidth controls to receive voice clearly.
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    11 分
  • Below the Noise Floor — Episode 4: "The HF Bands in Practice"

    Below the Noise Floor — Episode 4: "The HF Bands in Practice"
    2026/06/20
    Not all HF bands behave the same way. Some come alive at night, some peak at noon, some only open during high solar activity. This episode is a practical band-by-band tour of the amateur HF spectrum - what each band is used for, when to listen, and where to point your attention when you are just getting started.
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    10 分
  • Below the Noise Floor — Episode 3: "Reading the Waterfall"

    Below the Noise Floor — Episode 3: "Reading the Waterfall"
    2026/06/13
    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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    11 分
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