Here is a LOT of information about the current status of the telluric transmission experiments at EPD Laboratories, Inc. For 1 Watt, the ground transmission was received at over 15 miles away!
EDIT: The 1 watt 15+ mile telluric ground transmission experiment may have been more. One calculation is 2.8 watts but Eric said the radio has a feedback circuit that cuts back power when the SWR changes so effective power should have been under 1 watt. In any case, he’ll use one of the small Feeltech or similar type of signal generators that are 1/4 watt and he’ll drive out further and see what happens. We’ll report back what the results are when that is completed.
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