WSPR

WSPR (pronounced “whisper”) is an acronym for “Weak Signal Propagation Reporter.” With a computer program of this name and a standard SSB transceiver, you can participate in a worldwide network of low power stations exchanging beacon-like transmissions to probe potential propagation paths. More info at WSPRnet.org

WSPRing Around the World - Read This First

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Conventional Frequencies for WSPR Activity

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