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Building a Shortwave Monitoring Stack on Linux
Daniel wants to build an automated shortwave monitoring station: an affordable SDR, a Linux server, frequency scanning, and automatic uploads to a shared cloud for community analysis. The answer starts with a hard physical constraint — the thirty-dollar RTL-SDR dongle everyone reaches for doesn't cover the HF bands where diplomatic traffic lives — and ends somewhere more interesting: a global network of 700+ KiwiSDR receivers that has already solved the capture layer. We walk through the real toolchain (rtl_fm, rtl_power, rtl_airband, OpenWebRX), the antenna problem that no software can fix…
The skinny
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