User's Manual

Smart Machine Smart Decision
- 8 -
RXD, TXD ±2KV ±8KV
Antenna port ±5KV ±10KV
SPK_P/SPK_N/
MIC_P/MIC_N
±4KV ±8KV
PWRKEY ±4KV ±8KV
Note: It is suggested that customers in serials with 100ohm resistances on UART lines for ESD
consideration.
4. Radio Characteristics
4.1. Module GSM/GPRS Output Power
The following table shows the module conducted output power, it is followed by the 3GPP TS 05.05 technical
specification requirement.
Table 9: SIM808 GSM 900 and GSM 850 conducted RF output power
GSM850、EGSM900
Tolerance (dB) for conditions
PCL Nominal output power (dBm)
Normal Extreme
5 33 ±2 ±2.5
6 31 ±3 ±4
7 29 ±3 ±4
8 27 ±3 ±4
9 25 ±3 ±4
10 23 ±3 ±4
11 21 ±3 ±4
12 19 ±3 ±4
13 17 ±3 ±4
14 15 ±3 ±4
15 13 ±3 ±4
16 11 ±5 ±6
17 9 ±5 ±6
18 7 ±5 ±6
19-31 5 ±5 ±6
Table 10: SIM808 DCS 1800 and PCS 1900 conducted RF output power
DCS1800、PCS1900
PCL Nominal output power (dBm) Tolerance (dB) for conditions