External Antenna; Environmental Characteristic - Teleorigin RB900SG User Manual

9.3 External antenna

The external antenna is connected to the modem via SMA connector. The antenna must
have the parameters shown below in the table.
Antenna frequency range
Impedance
DC impedance
Gain
VSWR (with cable)
The antenna chosen for working with the modem should best fit to the circumstances of
the environment it is used in. When the modem is placed in a room, or somewhere where
the range of networks signal is too low, an outdoor or a specific indoor antenna should be
used.

9.4 Environmental characteristic

Table below gives the environmental operating conditions of RB900SG terminal.
Attention!
Exceeding the values may result in permanent damage to the module.
Parameter
Ambient Operating
Temperature
Storage Temperature
ESD
Humidity
31
Supporting GSM, UMTS or LTE frequencies
50 Ω
0 Ω
0 dBi w/o cable; 2dBi w/ cable
-10 dB
Conditions
At antenna connector
Contact
Air
At interface connector
Min Max
-20 60
-40 85
± 6
± 15
± 1
5 85
Unit
°C
°C
KV
%