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On Mar 25, 12:36 pm, (Richard Harrison)
wrote: Art wrote: "If Kraus said "The radiation is perpendicular to the acceleration" then the book is worthless." Art scoffs at Kraus and Art scoffs at experience with antenna orientation for best reception. So that readers aren`t mislead, olease refer to page one of Terman`s 1955 opus: "---radio waves. travel with the velocity of light and consist of magnetic and electric fields at right angles to each other and also at right angles to the direction of travel." Then check page 923: "--- E is the field strength of the wave in volts per meter, Psi is the angle between the plane of polarization and the wire in which the voltage is induced" ---It will be observed that the quantity E cos Psi cos theta is the component of the field strength which has a wavefront parallel to the antenna and is polarized in the same plane as the antenna." He who scoffs at Terman is at great peril. Best regards, Richard Harrison, KB5WZI But ham radio and the Navy have proved him wrong with the T2FD testing ! Computor programs designed around Maxwell's laws also prove him wrong. I suggest you study the under pinnings, if any, by Terman of that particular point and then share the "proof" with all of us. Again, you have two vectors for the electric and magnetic field at right angles to each other. Using your own brain please tell as where the curl vector MUST be to prove your case. Ofcourse you can read a lot of books and select a diagram of the vectors involved that solidifies your position but I don't think you will find one anywhere. Your HIT and MYTH aproaches just doesn't work out. |
#2
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Art wrote:
"But ham radio and the Navy have proved him (Terman) wrong with T2FD testing." Art has likely tried a VHF or UHF antenna by rotation within a linearly polarized wavefront. If so, he has experienced cross-polarization and noted about 20 dB loss when cross-polarized in the field. My WW-2 navy ship used a Marconi (inverted L) antenna for HF communications with a Collins TCS. A signal reflected by the ionosphere gains random polarization in the process. The vertically polarized Marconi does well with a ground wave over short distances even at HF over sea water. We had no slopers. The VHF and UHF antennas were all vertical whips to cover all azimuths. Art`s inclined antenna is in general a myth. For rntertainment, we had a broadcast receiver called the RBO. It too used a Marconi antenna as all medium wave broadcasts are launched from vertical antennas. It worked well as would be expected of a broadcast receiver. Best regards, Richard Harrison, KB5WZI |
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