User's Manual

49
Document Number: 0100SM1401 Issue: 12-16
Lightning Arrestors
A lightning arrestor is used to help minimise lightning damage to radio devices. Lightning arrestors are made to bleed off
electrostatic build-up to help prevent a direct lightning strike from hitting the antenna system. Also, if a lightning strike
happens nearby, the arrestor helps to route the energy to ground.
The lightning arrestor is typically installed on the inside of a radio hut, between a coaxial tail lead the antenna feeder cable.
The lightning arrestor comes with an N-Type female socket on each end.
Schneider Electric offers a variety of Lightning Arrestors:
Antennas Feedline Cable Loss characteristics
Cable Diameter
[order code reference]
150 MHz 450 MHz 900 MHz 2500 MHz
dB/100 ft dB/100 m dB/100 ft dB/100 m dB/100 ft dB/100 m dB/100 ft dB/100 m
10 mm (0.4 in.)
[TBUMRFANT-xxxxxx-A]
1.5 5.0
2.7 8.9
3.9 12.8 6.8 22.2
13 mm (0.5 in.) Heliax
[TBUMRFANT-xxxxxx-B]
0.8 2.7 1.5 4.8 2.1 6.9 3.6 12.0
Antenna Feedline Cables
Order Code Notes
TBUMRFANT-99F30M-B
Trio RF Cable Antenna Feedline 99Ft/30m, 0.5in/13mm Heliax N-Male To N-Male (LDF4-50A or equivalent)
TBUMRFANT-75F22M-B
Trio RF Cable Antenna Feedline 75Ft/22m, 0.5in/13mm Heliax N-Male To N-Male (LDF4-50A or equivalent)
TBUMRFANT-75F22M-A
Trio RF Cable Antenna Feedline 75Ft/22m, 0.4in/10mm N-Male To N-Male (LMR-400 or equivalent)
TBUMRFANT-50F15M-A
Trio RF Cable Antenna Feedline 50Ft/15m, 0.4in/10mm N-Male To N-Male (LMR-400 or equivalent)
TBUMRFANT-25F7M-A
Trio RF Cable Antenna Feedline 25Ft/7m, 0.4in/10mm N-Male To N-Male (LMR-400 or equivalent)
TBUMRFANT-10F3M-A
Trio RF Cable Antenna Feedline 10Ft/3m, 0.4in/10mm N-Male To N-Male (LMR-400 or equivalent)
Feeder Tail Cables
As the antenna needs to be mounted up high, a longer length of RF cable needs to run from the outside of the hut/
cabinet, to the antenna, this cable is called ‘Antenna Feedline Cable’.
Schneider Electric offers a variety of Antenna Feedline Cables:
As typical installations using antenna feedline cables use long lengths, it is important to consider the loss characteristics of
the cable being used, see the loss characteristics table below:
Lightning Arrestors
Order Code Frequency range
Protected Side
Connector
Surge Side
Connector
Mounting Style VSWR Notes
TBUMLT-ARRES-TYPEA
125 MHz to 1 GHz N-Female N-Female Bulkhead with right
angle bracket
1.1:1 Turn-on: 600 Vdc ±20%
TBUMLT-ARRES-TYPEB
2 to 6 GHz N-Female N-Female Bulkhead inline (no
bracket)
1.3:1 Surge: 10kA IEC 61000-
4-5 8/20μs waveform