Ferrite rod antennas on TX

It is some years since I tried this, but I remember being surprised how well this worked. As long as the ferrite is not saturated, a ferrite rod will work on TX. I tried it on WSPR with the antenna just on the shack table. Of course, WSPR works well.

See https://sites.google.com/site/g3xbmqrp3/antennas/ferrite_tx