The Ground Spike Antenna
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This is post 2472 in a continuing series of simple ham radio antennas.
Thanks to Kevin Loughin (KB9RLW) for this interesting exploration of VLF and LF antennas.
There's a fascinating world of new radio experiences below 500 KHz--all you need is a simple "Ground Spike Antenna" to begin the adventure.
Here are some comments from Kevin: