User guide

Enfora GSM1308 and
GSM1318
Quad-Band Spider®
SA-G+
User Guide P a g e 11 Revision: 1.03
2.4 CONNECTING THE GSM/GPRS ANTENNA
The antenna is supplied by the user. The antenna must have a nominal impedance
of 50 Ohms. The VSWR must be less than 2.0:1. System antenna gain should be
0-2 dB for optimum performance.
The GSM/GPRS SA-G+ operates at the 850/900/1800 and 1900 MHz frequency
bands. Care needs to be taken when connecting the antenna since the right type
of antenna will be required for proper operation of the modem. The antenna
connector on the GSM/GPRS SA-G+ modem is SMA Female. The antenna has to
be connected to the connector labeled “Antenna” as shown below in Figure5.
Connect the
GSM/GPRS
antenna here.
Figure 6 GSM/GPRS SA-G+ Connecting the Antenna