The next solstice was only three weeks away. Elena and Marco prepared a secondary coil, calibrated precisely to 13.7 MHz—an unusual frequency that matched the orbital resonance of the Earth‑Moon system. They positioned the coil at the base of the antenna and awaited the night of the winter solstice.
: Focuses on the "how" and "why" of antenna operation, covering line propagation and general functioning. Volume 2 (Practice) Nerio Neri Antenne Pdf
A concise refresher on wavelength, impedance, and polarization. Neri avoids heavy calculus, using instead graphical representations of the electromagnetic field. The next solstice was only three weeks away
of this piece to a specific antenna type he covered (like wire dipoles or directional beams), or should we adjust the tone : Focuses on the "how" and "why" of
: Some readers find the instructional style a bit old-school, describing it as a "collection of topics" rather than a single organic narrative.
To illustrate the value of these documents, consider a typical project found in the :
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