AURA (serv.man4) - Harman Kardon Audio EMC - CB Certificate (repair manual). Page 8

Report No.: 

EM201300550-13

                      Application No.:

 ZJ00032797  

                  Page 8 of 13 

 

 

Now the EUT frequency rang in 2400-2483.5MHz, so the limit S for it are 10W/m

2

.   

 

The antenna port of EUT Max output power is 19.18 dBm (82.79mW).  The gain of the PCB 
antenna is 4.8dBi in the actual use. 4.8dB logarithmic terms convert to numeric result is 
nearly 3. 
So the  

R1= 

S

4π

=  

10000

14

.

3

4

3.0

82.79







= 4.75cm, 

 

So the recommend use distance for EUT external antenna is larger than 4.75 centimeter.