Chapter 1 - Basic Radio Theory Flashcards Preview

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Flashcards in Chapter 1 - Basic Radio Theory Deck (10)
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1

Give the speed of a EM radio wave in a vacuum

300,000,000 m/s
3 x 10^8 m/s

2

What is frequency

cycles per second

3

Give the formula for wave length

Landa = c (speed of light)
--------------------------
f (frequency Hz)

4

Give size for
Kilo
Mega
Giga

K - 000
M - 000 000
G - 000 000 000

5

Surface wave is which freq and slow because

VLF and LF
slower because it is in the friction zone next to the earth's surface

6

A skywave does what in the ionosphere

Refracts

7

What happens to the ionosphere during the night and what does that do to range and accuracy

It is higher
increase range
decrease accuracy

8

If an antenna is fed with AC which two fields are generated

Electrical
Magnetic

These fields are perpendicular to each other

9

Diffraction is

Radio waves travel over and around obstacles

10

Space waves are

Line of sight and high frequency