N9OGL: Exceeding the Part 15 EM limitation for fun and profit
On 15 Aug 2006 19:40:07 -0700, N9OGL wrote:
The power in wattage and the electrical field are not related because a
power output in wattage can produce different fields depending on lengh
of coax, antenna, antenna height...and your friends in the Office of
You can't get around physics, Todd. The power density is directly
related to the electric field through an Ohm's law type of relationship,
expressed as the square of the r.m.s value of e, divided by the
impedance of free space. Once you know the power density, it is a
matter of summing that power density over the radiation pattern of the
antenna to figure out the total radiated power. Therefore, there *is* a
relationship between radiated power and field strength. In the case of
an isotropic radiator, the relationship between radiated power and field
strength is easy to calculate, and it provides one with a limiting case
which can act as a guideline.
engineering and technology at the FCC will tell you that. The antenna
I'm using is a very imefficient antenna, in fact the signal is acually
I'm not interested in your rationalizations, Todd, because I'm not the
one who is at risk. In this real world, your power output is about
five orders of magnitude larger than the power theoretically needed to
produce the maximum allowed electric field. To me, that would be a
cause for great concern.
If you want to risk an FCC enforcement action against you, be my guest.
====================
God said, "div D = rho, div B = 0, curl E = -@B/@t, curl H = J + @D/@t,"
and then there was light.
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