User Manual

Smart Machine Smart Decision
SIM800L-EVB_User Guide_V1.00 7 2013-07-22
2. EVB Accessory
Figure 3: EVB accessory
A: GSM antenna
Model GSM antenna: WT-C&G-28-90
Frequency Range (MHz) 824 ~ 960 1710 ~ 1990
VSWR ≤1.5 (900MHz) ≤2 (1800MHz)
Gain: 3dBi
Input Impedance (Ω): 50
Polarization Type: Vertical
Connector Type: SMA
B: Antenna transmit line
C: 5V DC source adapter
D: Serial port line
NOTE: The maximum gain of the GSM antenna gain should not exceed 3dBi for end-users.