Radio Fundamentals Flashcards
1
Q
What is Hertz
A
unit of frequency (kHz, MHz)
1 Hertz - one wave per second
1000 waves per second - 1000 kHz
1M waves per second 1megahertz
2
Q
Speed of light
A
300,000,000 m/s
300,000 km/s
186,000 statue miles / s
3
Q
Wavelength
A
the length of One complete cycle,
4
Q
Frequency
A
the number of waves (cycles) passing a point. in a second.
5
Q
The higher the frequency,
A
the shorter the wave length
6
Q
Amplitude
A
The distance from one extermity of the oscilliation to the middle point or netural value.
7
Q
VHF Range
A
30Mhz to 300MHz
8
Q
Voice communication range
A
118.00 - 135.95 MHz
9
Q
VOR and ILS range
A
108.00 - 117.95 Mhz
10
Q
NDB USES
A
LF MF
11
Q
DME uses
A
UHF
12
Q
Ground wave
A
Wave that travel directly from transmitter to receiver
13
Q
Sky waves
A
Some waves will reach the space. at HF, the ionsophere refracts them
