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Digital modes (WSJT-X and JS8Call, primarily) Yes 2N2/40+ Homebrew 40m (mods for other bands) 2 CW N/A Small Wonder Labs SW+ Kit Single band 80m / 40m / 20m 2 CW No ME Series Kit Single band 80m / 40m / 30m / 20m 2 CW Yes Mosquita III Kit 40m 5 CW No [51] Nouveau 75A Kit 80M 5 (Carrier) / 20 PEP AM: Yes Splinter II Kit 40m 0.5 CW Yes OHR 100A Kit
When several separate paths from transmitter to receiver exist, a condition known as multipath, they almost never have exactly the same length so they almost never exhibit the same propagation delay.
Screenshot of PSK Reporter 24 Hours of Reception Reports for Station D2UY. PSK Reporter is an amateur radio signal reporting and spotting network and website started by Philip Gladstone in 2014 which allows operators to see where their radio signals are being received.
WSJT-X 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.