FSK Flashcards
1
Q
What’s FSK?
A
Frequency shift keying-
Is a modulation method whereby the radio-frequency carrier is cause to shift between two or more discreet frequency values
2
Q
The difference between Mark and space is?
A
Excursion
3
Q
What’s shift?
A
The difference between to adjacent frequency levels
4
Q
Excursion?
A
From the lowest to highest frequency
5
Q
Deviation frequency?
A
From the centre to either the highest or lowest frequency level
6
Q
What’s SMI?
A
Mi in fsk is known as squarewave modulation index and is ration of fd and fm
SMI= fd/fm
SMI=shift/bauds
7
Q
Calculate the minimum bw?
A
2(fd+fm) or shift + bauds
