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7 MHz WSPR: A week with 100 microwatts
Tiny magnetic loop does 7 and 10 MHz WSPR
Milliwatt WSPR: How low can you go?
Recording WSPR signals for later decoding
QRP DX from the river (40 & 20m WSPR & CW)
ZachTek WSPR Transmitter - Overview - Pretty Cool.
Elecraft AX1 antenna with the Zachtek WSPR transmitter.
Wspr 10 mW avec raspberry pi
WSPR Beacon Status LED when transmitting
Using WSPR for weak signal propagation
W3PM Homebrew WSPR Transceiver
WSPR Weak Signal Propagation Reporter