About Us › Forums › temp › Height Needed for MW Signals to Clear Path Obstructions › Perspective on Radiated Fields
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… Rich’s measured signal at 1530 kHz appears to have been a high power licensed station giving it a massive advantage compared to a micro-signal from a part 15 station. To keep these technical conversations valid we cannot compare unlike examples.
My post showing essentially the same field (as reported by a Tecsun PL-310) on two sides of a hospital building was made over a path length change of about 7.7%.
A path length change of 7.7% along the radials having useful fields produced by a typical Part 15 AM system would show similar field changes, when using a Tecsun PL-310. However a 7.7% change in the physical distance from a Part 15 AM system along that radial path would not be long enough to include a tall building.