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

Open QST WSPR article in new tab

Conventional Frequencies for WSPR Activity

Ultimate 3S Kit Videos by Bob Churchward

QRP-Labs Ultimate 3 - Pt 1 Unboxing

QRP-Labs Ultimate 3 Pt2 Low Pass Filters

QRP-Labs Ultimate 3 Pt3 The Motherboard

QRP-Labs Ultimate 3 Pt4 Putting it On the Air