Home Business How Does Radio Frequency Lightning Arrester Work?

How Does Radio Frequency Lightning Arrester Work?


One of the major causes of such a dangerous and unprecedented power surge is lightning. Lightning is a natural occurrence that you cannot exactly predict or control. So, it is best to learn how to manage it to keep your electronic equipment safe. Here, we’ll consider what a radio frequency lightning arrester is and how it works.

What is a Radio Frequency Lightning Arrester?

An rf lightning arrester is a device that helps protect sensitive electronic equipment from sudden power surges caused by lightning. They do this by channelling the extra current to the ground until the current flow becomes normal again.

Generally, lightning arrester manufacturers produce the device to shield the users from lightning current surges and the risks that follow.

How Does a Radio Frequency Lightning Arrester Work?

A radio frequency lightning arrester is usually cylindrical. On average, it is 2 to 3 inches long, and goes in series with the antenna cable. The device consists of an inductor in series and a spark gap.

Typically, you install the lightning arrester at the entry point of the building or equipment panel. During lightning strikes, the lightning arrester becomes active and its primary function is to redirect the electric charges from the lightning to the ground.

When lightning strikes, the arrester breaks its insulation and the device conducts electric current to the ground to disperse safely. This process ensures that the current from the lightning does not pass through to the equipment, thereby protecting it from damage due to excess charges.

In essence, the lightning arrester mitigates the risks of excess lightning charges and the damages they can cause. The goal is not to stop the lightning but to provide a safer route for the discharge of the current.

What is the Best Place to Install Radio Frequency Lightning Arresters?

The best position to install a radio frequency lightning arrester is in series with the antenna cable, at the bottom of the cable run, and at the entry to the building or equipment panel

Types of Radio Frequency Lightning Arresters

Just like dual-band mobile antennas, there are different types of electrical lightning arresters. Some of the common types include:

*DC Bloke

*DC Pass

*Gas Tube

Features of a Functional Lightning Arrester:

*For a lightning arrester to fulfil its functions, the lightning arrester manufacturers ensure it possesses these characteristics.

*The lightning arrester must break down as soon as the voltage exceeds its breakdown value. That way, it safely diverts the extra surge to the ground to prevent any damage due to excess current.

*During the breakdown, the arrester must be able to discharge the surge without being damaged.After the breakdown, the lightning arrester must be able to restore the insulation level for power frequency.


Protection of sensitive radio or electronic equipment is the most important factor. With protective devices such as the RF lightning arresters, you can be sure your equipment is secure from the risks that come with unexpected current surges such as lightning.


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