Radiall/Larsen Antenna Technologies is proud to introduce a new line of lightning protectors. Lightning protectors are commonly used to protect equipment

in wireless communications infrastructure against high power surges of lightning strikes. They should be located as near to the antenna or equipment being

protected as possible. Common locations are the top of the mast where the transmission line exits the antenna, and the entrance or inside the cabinet where

the transmission line enters the base station electronics.

Lightning protectors from Radiall/Larsen are quarter wave stub and gas discharge technology featuring Radiall’s unique BBR over silver plating. BBR is

a non-magnetic material which provides a superior non-tarnishing surface. They can be used in indoor or outdoor applications due to their IP67 water

submersion rating. Our standard product offering features N female-type connectors. Options are available with 7/16 DIN connectors. Contact the factory

for more information.

• Weatherproof to IP 67 standards

• VSWR less than 1.20

• RF power rating (VSWR = 1): 1.2 kW @ 900 MHz

Quarter wave stub technology is based on a three-port coaxial device with N female connectors. When lightning

strikes, current is instantaneously diverted to the ground through a short circuit mechanism in the stub. The

advantages of this technology are no maintenance required and the lowest residual voltage passes through to the

equipment.

• RF power rating (VSWR = 1): 0.8 kW @ 1900 MHz

RADIALL/LARSEN LIGHTNING PROTECTORS

Quarter wave stub technology is based on a three-port coaxial device with N female connectors. When lightning

strikes, current is instantaneously diverted to the ground through a short circuit mechanism in the stub. The

advantages of this technology are no maintenance required and the lowest residual voltage passes through to the

equipment.

The choice of which gas capsule to order is based on the senstitivity of the equipment in each application. The most critical characteristics to consider are the discharge current

value and the sparkover voltages. The gas capsule must first be chosen by the maximum voltage the equipment can withstand (ie residual voltage reaching the equipment

after passing through the protector and the peak voltage that can reach the equipment prior to protection). Then it should be chosen by the maximum current which the

protector can withstand - either 10 kA or 20 kA.

For your ordering convenience, we also offer the R445.G00.000 with the gas capsule. Use the chart shown below to determine which gas capsule fits your needs then order

the right combination using the follwing part numbers:

Gas Discharge Tube with Gas Capsule

Part Number (=) Gas Discharge Tube (+) Gas Capsule

R445.G00.002 R445.G00.000 R445.999.100

R445.G00.003 R445.G00.000 R445.999.101

Part Number Voltage (V)1 Voltage (V)2 Current (kA)3 Voltage (V)4 (V)5 Recommended Use

R445.999.100 230 +/- 20% < 700 10 60 10 Power 20 - 110W

R445.999.101 350 +/- 20% < 1000 10 75 15 Power 100 - 300W

R445.999.102 90 +/- 20% < 700 20 60 10 Transmitter or Receiver up to 20W

R445.999.103 230 +/- 20% < 700 20 60 10 Power 20 - 110W

R445.999.105 350 +/- 20% < 1000 20 60 10 Power 100 - 300W

1 Maximum continuous voltage that can reach the equipment through the protector prior to ionizing gas in capsule and diverting voltage to ground.

2 Maximum peak voltage at 1 kV/ms that can reach the equipment through the protector prior to ionizing gas in capsule and diverting voltage to ground.

3 Maximum amount of current that the GDT can withstand without damage.

4 The voltage at which the gas returns from ionized to inert state.

Gas discharge tube (GDT) technology with N female connectors works like a voltage filter. When lightning strikes,

the voltage across the gas capsule increases. When the voltage reaches the DC sparkover voltage, the gas

ionizes and becomes conductive. At this point, the current diverts through the gas capsule to the ground. GDT

incorporates the use of a field-replaceable gas capsule which must be maintained regularly. The capsule is sold

spearately from the GDT lightning protector.