Power Density Thresholds

Power Density Thresholds

Based on a 20 kHz measurement bandwidth, the calculated power density of the transmitter at the reference point should be less than:

• 1 x 10^-8 W/m² for frequencies below 54 MHz
• 1 x 10^-12 W/m² for frequencies from 54 MHz to 108 MHz
• 1 x 10^-14 W/m² for frequencies from 108 MHz to 470 MHz
• 1 x 10^-17 W/m² for frequencies from 470 MHz to 1000 MHz
• freq² (in GHz) x 10^-17 W/m² for frequencies above 1000 MHz

Except for frequencies that reside in the radio astronomy observing bands listed in the US Table of Frequency Allocations, in which case the power densities listed in Table 1 of Recommendation ITU-R RA.769 shall apply. For a comprehensive list, click here.