User's Manual
                                                                                                                                                  Smart Machine Smart Decision 
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Normal  Extreme 
0  30  ±2  ±2.5 
1  28  ±3  ±4 
2  26  ±3  ±4 
3  24  ±3  ±4 
4  22  ±3  ±4 
5  20  ±3  ±4 
6  18  ±3  ±4 
7  16  ±3  ±4 
8  14  ±3  ±4 
9  12  ±4  ±5 
10  10  ±4  ±5 
11  8  ±4  ±5 
12  6  ±4  ±5 
13  4  ±4  ±5 
14  2  ±5  ±6 
15  0  ±5  ±6 
For the module’s output power, the following is should be noted:   
At GSM900 and GSM850 band, the module is a class 4 device, so the module’s output power should not exceed 
33dBm,  and at  the  maximum  power  level,  the  output  power tolerance should  not  exceed +/-2dB  under normal 
condition and +/-2.5dB under extreme condition. 
At DCS1800 and PCS1900 band, the module is a class 1 device, so the module’s output power should not exceed 
30dBm,  and at  the  maximum  power  level,  the  output  power tolerance should  not  exceed +/-2dB  under normal 
condition and +/-2.5dB under extreme condition. 
The device complies with RF specifications when the device used over 20cm form your body. 
4.2.  Module GSM/GPRS Receive Sensitivity 
The following table shows the module’s conducted receive sensitivity, it is tested under static condition. 
Table 11: SIM808 conducted GSM/GPRS receive sensitivity 
Frequency   
Receive sensitivity(Typical) 
Receive sensitivity(Max) 
GSM850  <-108dBm  <-106dBm 
EGSM900  <-108dBm  <-106dBm 
DCS1800  <-108dBm  <-106dBm 
PCS1900  <-108dBm  <-106dBm 










