3
4. [R] Centimeters to feet = Centimeters * .0328
5. Square R
6. Multiply R² * 4
π
7. [S] Divide (R² * 4
π ) into
EIRP
S = Power Density in milliwatts per square centimeters.
Note
At frequencies above 1500 MHz, S must not be greater than 1.
Reference
FCC OET Bulletin 65, August 1997 - Evaluating Compliance with FCC Guidelines for Human
Exposure to Radio Frequency Electromagnetic Fields
The figure below is a typical graph for a Vislink HDX-1100 Transmitter and shows the
permissible exposure distance for various antenna gains. Graphs and data will vary, based
on the actual transmitter, output power, frequency, and antenna utilized. One plot provides
the permissible output of the transmitter for digital modulation, and the other plot for analog
modulation.
Vislink, in accordance with the requirements set forth by the FCC, provides this information as a
guide to the user and assumes the users of this equipment are licensed and qualified to operate
the equipment per the guidelines and recommendations contained within the product user
guides and in accordance with any FCC rules that may apply.
