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RAK7249/40
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1. Outdoor Surge Protection System
1.1 Antenna Grounding
RAKwireless recommends a lightning arrestor to be installed on all the antenna N-
Type terminals (LoRa, LTE, Wi-Fi and GPS). It is recommended to use a 10 AWG or
better grounding wire to connect the arrestor to the tower mounted LoRa antenna.
The arrestors have to be Female to Male type in order to fit the antenna and housing
connectors. Make sure you use a 10 AWG or better wire to connect the screw
terminals of the arrestors to the grounding rail mounted on the building wall
(grounding bar in case of field deployment as in the following picture).
GPS Lightning Arrester
LoRa Lightning Arrester
1.2 Gateway Grounding
Additionally, it is recommended to use another 10 AWG or better grounding wire to
connect the screw terminal on the bottom right side of the Gateway casing to the
grounding rail (bar). This is can be seen circled in blue in the first image to the right of the
GPS Lightning Arrester.
Note: No additional protection for the Ethernet cabling is required at the Gateway side.
There is a surge protection system built-in (GDT + Anti-surge resistor).
