Topband: Fw: Shortened Radial Experiments

Richard Fry rfry at adams.net
Fri Dec 19 19:18:50 EST 2014


RE:  Brian Mattson's post of Friday, 19 Dec 2014 12:23:52 -0500

The velocity of propagation in the MF and HF bands along radial conductors 
that lie on, or are buried several inches in the earth is inconsequential.

What DOES matter is the free space wavelength, and the number of those 
radial conductors.

This was shown in the real-world experiments of Brown, Lewis & Epstein of 
RCA Laboratories, published in the Proceedings of the Institute of Radio 
Engineers in 1937.

Those BL&E findings established the requirements for such radial systems 
required of AM broadcast stations subject to FCC jurisdiction, to the 
present day.

R. Fry, CPBE 



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