The problem with this link may be the background noise. Better than a Morse transmission, I advise you to use the FT8 digital mode for your project, which allows to decode signals down to -20 dB below the background noise.
This is a good point. We will be trying multiple modes, partly because different modes can provide additional non-herzian gradients that work better in parallel resonance, and partly because one preliminary experiment actually reported better performance with voice than with CW. Ham radio have already communicated around the earth on these frequencies.
If the signal passes, how will you distinguish your transmission from a classical radio transmission?
1 - Since none of our systems will have radiating antennae, the transverse wave should be minimized, especially at such a low frequency band. With 100 watts it's proven difficult to pick up *anything over a mile away using an ungrounded aerial with these setups. 1.5 - Receiving stations with conventional aerials will also be used for cross-comparison. Both onside as well as through online public SDR's. There will inevitably be some bleedover as transverse modulation is required to sustain the longitudinal mode. 2 - Performing the tests over a period of time should also rule out aerial and ionospheric skip (since there are times when conditions do not allow skip propagation, especially in the 160m band. If we get consistent performance over a long period with no significant change in reception quality, that would fairly conclusively rule out transverse propagation. 3 - There is a small chance we'll get measurable power at shorter distance (2-10 miles). Recovering >30% power at a receiving station through the earth at those distances using the ground as a transmission cavity would confirm longitudinal displacement. Dr Adrian Marsh has the best bench results with this so far using a pair of TMT's to send 500 watts a short distance over a 40awg wire at 99%+ efficiency. https://www.am-innovations.com/high-efficiency-transference-of-electric-power/
At the moment I'm getting a feel for the three-coil arrangements as there are a lot of interesting dynamics that influence each-other between secondary and extra. Not only are the resonant frequencies dragged up/down in concatenated mode, but each coil will 'push' the other up/down in frequency as well. For example, you can have an Extra coil that naturally resonates at 2.1mc in-air at 1/4-wave, but concatenating it in series with a secondary can bring that frequency all the way down to 1.43mc, or all the way UP to 2.49mc depending on the characteristics of the secondary.   It's a weird, complex interaction that will take a few good days to piece together.
« Last Edit: 2022-08-05, 15:56:18 by Hakasays »
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Topic: Transatlantic Telluric Communication Experiment (Read 12847 times)
