19
Regulations in the USA
Federal Communications Commission
Code of Federal Regulations
Title 47, Ch. I, Part 15, Subpart B – Unintentional Radiators
Radiated Emission Limits - Secs. 15.109,15.209
------------------------------------------------------------------------
  Measurement         Field strength             distance
Frequency (MHz)  (microvolts/meter)          (meters)
------------------------------------------------------------------------
0.009-0.490......................  2400/F(kHz)              300
0.490-1.705......................  24000/F(kHz)              30
1.705-30.0.......................   30                                30
30-88............................      100                                3 
88-216...........................     150                                3
216-960..........................    200                                3
Above 960.......................   500                                3
------------------------------------------------------------------------
CISPR quasi-peak detector – 9 kHz  bandwidth  - loop antenna