How to protect your signal booster from lightning strikes

Mobile phone signal boosters are becoming more and more used in households and commercial buildings. Due to a quite considerable cost of these devices, their users are eager to secure their equipment and ensure their longevity. Outdoor antennas and antenna cables that are an integral part of any signal amplifier kit are susceptible to direct lightning strikes as well as to induced surges from nearby strikes, which, although less strong, may render ineffective amplifier parts of the device.

If the area where you live is frequently exposed to thunderstorms (like mountainous regions, coastal parts where the air during summer time remains dry, places with monsoon seasons), it would be highly advisable to protect a mobile signal repeater with a lightning surge protector. A lightning may not only cause damaging transients to the booster but also put a fire and hurt people in the immediate vicinity

Coaxial protectors are designed to protect equipment from damaging transients caused by lightning strikes. They contain a rechargeable gas discharge tube making maintenance rapid in the end-of-life scenario. These surge protectors should be installed in-line between the outdoor antenna and the signal booster. Thus, it will detect dangerously high voltage running thorough the cable and will disconnect the circuit.

How to install a lightning protector?

  1. Connect male N-connector of the surge protector to the female N-connector of the outdoor antenna.
  2. Connect the female N-connector of the surge protector to the male N-connector of the cable that leads to the signal booster.
  3. Clinch a copper wire to the grounding lug and then attach it to a master ground bar or earthing system in order to ensure low impedance path to ground. The ground wire must be as short as possible and straight – it is imperative that the ground wire isn’t looped or coiled. The suitable grounding locations can be the following: a ground rod (a metal rod normally buried outside the house), an electrical service panel (it is connected to the ground rod of the house), metal structure of a building (provided that this structure is grounded itself).
  4. Since the surge protector is not waterproof, tape it firmly with water resistant adhesive tape.

Please read carefully the instructions provided with the coaxial surge protector to ensure safe and effective installation in terms of grounding and maintenance.

Do not risk your equipment and, what is more, the inside of your house/office by protecting them from lightning.

Please note that the warranty doesn't cover damage from lightning strikes.

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