TCI-T0B: Antenna installation, tower safety, overhead power lines
TCI-T0B01:
Why should you wear a hard hat and safety glasses if you are on the ground helping someone work on an antenna tower?
To protect your head and eyes in case something accidentally falls from the tower
It is required by ITU rules
To keep RF energy away from your head during antenna testing
It is required by the electrical code
TCI-T0B02:
What is a good precaution to observe before climbing an antenna tower?
Put on your safety belt and safety glasses
Turn on all radio transmitters
Remove all tower grounding connections
Inform the FAA and the MOC that you are working on a tower
TCI-T0B03:
What should you do before you climb a tower?
All of these answers are correct
Arrange for a helper or observer
Inspect the tower for damage or loose hardware
Make sure there are no electrical storms nearby
TCI-T0B04:
What is an important consideration when putting up an antenna?
Make sure people cannot accidentally come into contact with it
Carefully tune it for a low SWR
Make sure you discard all packing material in a safe place
Make sure birds can see it so they don't fly into it
TCI-T0B05:
What must be considered when erecting an antenna near an airport?
The maximum allowed height with regard to nearby airports
The possibility of interference to aircraft radios
The radiation angle of the signals it produces
The polarization of signal to be radiated
TCI-T0B06:
What is the most important safety precaution to observe when putting up an antenna tower?
Look for and stay clear of any overhead electrical wires
Install steps on the tower for safe climbing
Insulate the base of the tower to avoid lightning strikes
Ground the base of the tower to prevent lightning strikes
TCI-T0B07:
How should the guy wires for an antenna tower be installed?
In accordance with the tower manufacturer's instructions
So each guy wire anchor point has an even number of wires
So that no guy wire is more than 25 feet long
Each guy wire must be pulled as tight as possible
TCI-T0B08:
What is a safe distance from a power line to allow when installing an antenna?
So that if the antenna falls unexpectedly, no part of it can come closer than 10 feet to the power wires
Half the width of your property unless the wires are at least 23 feet high
12.5 feet in most metropolitan areas
36 meters plus 1/2 wavelength at the operating frequency
TCI-T0B09:
What is the most important safety rule to remember when using a crank-up tower?
A crank-up tower should never be climbed unless it is in the fully lowered position
This type of tower must never be painted
Crank up towers must be raised and lowered frequently to keep them properly lubricated
Winch cables must be specially rated for use on this type of tower
TCI-T0B10:
Why is stainless steel hardware used on many antennas instead of other metals?
Stainless steel parts are much less likely to corrode
Stainless steel is a better electrical conductor
Stainless steel weighs less than other metals
Stainless steel costs less than other metals
TCI-T0B11:
What is considered to be an adequate ground for a tower?
Separate 8 foot long ground rods for each tower leg, bonded to the tower and each other
A single 4 foot ground rod, driven into the earth no more than 12 inches from the base
A screen of 120 radial wires
A connection between the tower base and a cold water pipe
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