From: David Roberson
How would we determine that a low frequency resonance actually exists in this case? Hmm . You want simple, right? Do you have a good DSO? One would probably see something with hydrogen loaded wire but the challenge would be the length. 100 meters or so would be required for ¼ wl but it could be tried with much less. If a meaningful test could be as simple as measuring the Q of a pulsed coil at various frequencies around 429 kHz then a nickel wire coil as cathode can be loaded electrolytically. You would be looking for a massive difference in ring time, in a simple test. If it doesnt show up, move on to something else.
