To clarify for the technically minded–I have TWO antenna attenuators on my HF analyzer. That changes the factory-designed read-out by a factor of 10,000—i.e. *much* less sensitive. That means a read-out of (for example) “30″ microwatts per meter squared, should now be read as “300,000″ microwatts per meter squared—just add four zeroes.
And since 300,000 microwatts per meter squared (µW/m2) IS EQUIVALENT TO 30 microwatts per CENTIMETER squared (µW/cm2), that’s what the two attenuators do—change the units of the read-out from the smaller unit (µW/m2) to the larger (µW/cm2). The FCC uses the larger unit.