This has been posted before, but results may surprise many.
Perhaps I should repeat these tests with FT8 from this QTH. FT8 is not as good as WSPR with weak signals but it is better than CW.
These tests were done at least 6 years ago and I have not tried since. It must be used with QRP or the ferrite may saturate.
See https://sites.google.com/site/g3xbmqrp3/antennas/ferrite_tx
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