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Robustel R3000 LG User Guide
RT_UG_R3000 LG_v.1.0.4 19 Jul., 2018 22/133
4.
Do not touch the metal of the card surface in case information in the card will lose or be destroyed.
5.
Do not bend or scratch the card.
6.
Keep the card away from electricity and magnetism.
7.
Make sure gateway is powered off before inserting or removing the card.
2.7
Attach External Antenna (SMA Type)
Attach an external SMA antenna to the gateway’s antenna connector and twist tightly. Make sure the antenna is
within the correct frequency range provided by the ISP and with 50 Ohm impedance.
Note:
Recommended torque for tightening is 0.35 N.m.
SMA antenna with a male connector for
cellular connection
RF-SMA antenna with a female
connector for LoRa connection
SMA antenna with a male
connector for GPS
connection