Radio

The radio desk

Reception maps, packet-radio positions, military HF, number stations, and the technology behind the signals.

Reception activity map

Explore reported amateur-radio reception through the PSK Reporter map.

Packet-radio positions, weather stations, and network activity through the public APRS Track Direct map.

Understand reception reports, propagation paths, and what a radio map can tell you.

Independent public copies of military HF traffic, with receiver provenance, source times and uncertainty flags.

Coded shortwave broadcasts, documented history, reception references and listening resources.

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