Station Assembly, Practice and Safety
antenna and tower safety, lightning protection
Why should you ground all antenna and rotator cables when your amateur station is not in use?
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To lock the antenna system in one position
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Correct AnswerTo protect the station and building from lightning damage
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To avoid radio frequency interference
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To make sure everything will stay in place
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How can an antenna system be protected from lightning damage?
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Install a balun at the antenna feed point
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Install an RF choke in the antenna feed line
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Install a fuse in the antenna feed line
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Correct AnswerGround all antennas when they are not in use
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How can amateur station equipment best be protected from lightning damage?
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Correct AnswerDisconnect all equipment from the power lines and antenna cables
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Use heavy insulation on the wiring
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Never turn off the equipment
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Disconnect the ground system from all radios
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What equipment should be worn for working on an antenna tower?
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A reflective vest of approved color
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Correct AnswerApproved equipment in accordance with provincial safety standards concerning climbing
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A flashing red, yellow or white light
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A grounding chain
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Why should you wear a safety belt if you are working on an antenna tower?
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To safely bring any tools you might use up and down the tower
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To keep the tower from becoming unbalanced while you are working
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Correct AnswerTo prevent you from accidentally falling
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To safely hold your tools so they don't fall and injure someone on the ground
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For safety, how high should you place a horizontal wire antenna?
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Above high-voltage electrical lines
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Just high enough so you can easily reach it for adjustments or repairs
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Correct AnswerHigh enough so that no one can touch any part of it from the ground
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As close to the ground as possible
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Why should you wear a hard hat if you are on the ground helping someone work on an antenna tower?
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So you won't be hurt if the tower should accidentally fall
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To keep RF energy away from your head during antenna testing
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So someone passing by will know that work is being done on the tower and will stay away
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Correct AnswerTo protect your head from something dropped from the tower
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Why should your outside antennas be high enough so that no one can touch them while you are transmitting?
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Touching the antenna might reflect the signal back to the transmitter and cause damage
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Touching the antenna might radiate harmonics
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Correct AnswerTouching the antenna might cause RF burns
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Touching the antenna might cause television interference
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Why should you make sure that no one can touch an open-wire feed line while you are transmitting with it?
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Because contact might break the feed line
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Correct AnswerBecause high-voltage radio energy might burn the person
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Because contact might cause spurious emissions
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Because contact might cause a short circuit and damage the transmitter
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What safety precautions should you take before beginning repairs on an antenna?
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Correct AnswerBe sure to turn off the transmitter and disconnect the feed line
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Be sure you and the antenna structure are grounded
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Inform your neighbors so they are aware of your intentions
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Turn off the main power switch in your house
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What precaution should you take when installing a ground-mounted antenna?
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It should be painted so people or animals do not accidentally run into it
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It should not be installed in a wet area
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Correct AnswerIt should be installed so no one can come in contact with it
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It should not be installed higher than you can reach
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