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More cards in this set
Card 6
Front
Another problem with long distance communication?
Back
Card 7
Front
What infrared signal does a remote control use?
Back
Card 8
Front
How does a remote control work?
Back
Card 9
Front
Advantages of digital signals?
Back
Card 10
Front
DAB radio advantages
Back
Card 11
Front
DAB radio disadvantages
Back
Card 12
Front
What are microwaves used for (not cooking)
Back
Card 13
Front
Why do microwave signals have poor signals?
Back
Card 14
Front
In a CD,
Back
Card 15
Front
Intense coherent laser beam
Back
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