I did US to Australia with a Raspberry Pi as the transmitter, a QRP labs filter for 10 Meters to clean up the signal, into an MFJ Tuner and then a random wire o

I did US to Australia with a Raspberry Pi as the transmitter, a QRP labs filter for 10 Meters to clean up the signal, into an MFJ Tuner and then a random wire over the house and no other amplifiers. Like 100mw or less? WsprryPi essentially just turns the pin on an off really quickly to generate the signal. This was with an Amateur Extra license.