Electronics and Communication Engineering - Communication Systems - Discussion
Discussion Forum : Communication Systems - Section 25 (Q.No. 4)
4.
An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz.
Discussion:
7 comments Page 1 of 1.
Merwan said:
3 years ago
Hanks for explaining @Tamzilan.
Tamzilan said:
8 years ago
Option A is correct.
FM Intermediate frequency 10.7 MHz.
Here FM receiver tuned frequency is 91.6 MHz.
Receiver tuned frequency - Intermediate frequency = Signal frequency.
91.6 - 10.7 = 80.9 MHz.
Image frequency = Signal frequency + 2 * Intermediate frequency.
80.9 + 2 * 10.7 = 102.3 MHz.
FM Intermediate frequency 10.7 MHz.
Here FM receiver tuned frequency is 91.6 MHz.
Receiver tuned frequency - Intermediate frequency = Signal frequency.
91.6 - 10.7 = 80.9 MHz.
Image frequency = Signal frequency + 2 * Intermediate frequency.
80.9 + 2 * 10.7 = 102.3 MHz.
Divya said:
9 years ago
The typical value of the intermediate frequency of FM is 10.7MHz.
That is why we took it.
That is why we took it.
Vini said:
1 decade ago
If 10.7 mhz image frequency = 91.6+2*10.7 = 113.
Rajeev said:
1 decade ago
Hi @Joseph,
How you got this corresponding oscillator frequency is 102.3MHz? Could please explain in steps?
How you got this corresponding oscillator frequency is 102.3MHz? Could please explain in steps?
Surampudi joseph said:
1 decade ago
Answer: IF intermediate frequency : 10.7MHz.FM receiver operates 88-108MHz.FM local oscillator operates 98.7-118.7MHz.
Tuned frequency is 91.6MHz and corresponding oscillator frequency is 102.3MHz. Then image frequency is 102.3+10.7 MHz = 113MHz.
Tuned frequency is 91.6MHz and corresponding oscillator frequency is 102.3MHz. Then image frequency is 102.3+10.7 MHz = 113MHz.
Sujata said:
1 decade ago
How this answer come?
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