Amateur VLF

There is a myth that VLF antennas are big. For RX they can be very very small!! So, for RX only, amateur VLF is remarkably accessible.

For TX high power and big antennas certainly help.   DK7FC has had some excellent results with long distances using earth probe antennas. These don't require very huge loading coils.

VLF amateur work requires dedication, although VLF earth-mode can give good results with quite simple kit. This is certainly one of the frontiers ripe for experiments.

See https://sites.google.com/site/g3xbmqrp3/vlf