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Old July 5th 06, 11:48 PM posted to rec.radio.amateur.homebrew
AndyS AndyS is offline
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First recorded activity by RadioBanter: Jul 2006
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Default IEEE Standard for RF Safety Levels


Christopher Cole wrote:

There is a nice chart for MPE limits. However, there is no information given
for frequencies below 300kHz. Does anyone know what the MPE limits would
be for both electric and magnetic field strength at 80kHz?

Thanks,
\ /


Andy comments:
Using the 1992 ARRL handbook regarding the proposed ANSI standard,
Figure 4, page 36-4, I get the following at 80 khz..

Efield : 600 V/m or 100mw/ sq cm ( these are the same levels)

Hfield: 1000 watt/ sq cm ( this is a power density form of H
field)
This is 163 amps/meter

These are for both controlled and uncontrolled environments, and
are DIFFERENT levels.. In other words, the allowable safe H field
is a LOT more powerful than the safe E field .

These are really damn big numbers and I don't think you should worry
much about them unless you play golf in the rain.......... :)))))


Andy in Eureka, Texas W4OAH\



( The chart is small, and my glasses are thick, so I apologize for
any lack of precision.... )