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Welcome to true QRP with the U3s, Hans designed a truly magical box that is fun to build and performs so well
Give us a bit of info on your QRZ page about you and your station
Have a look at QRSS as well, that another fun QRP mode
You can run more than one mode in sequence on the U3s
I run WSPR, then FSKCW for QRSS, then slow hell to print my Callsign, like G0MBA and G0PKT below
How on earth is this possible?