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Paul Elliot, WB6CXC, gave a presentation on his implementation of WSPR at the March meeting:

Low Cost WSPR with Raspberry Pi and SDR

WSPR (pronounced “whisper”) stands for “Weak Signal Propagation Reporter”. It is a computer program used for weak-signal radio communication between amateur radio operators. The program was initially written by Joe Taylor, K1JT, but is now open source and is developed by a small team. The program is designed for sending and receiving low-power transmissions to test propagation paths on the MF and HF bands.

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