A super heterodyne receiver is designed to receive transmitted signals between 5 and 10MHz. The tuning range of the local oscillate for IF frequency 600kHz for high-side tuning would be
A
4.6to9.6MHz
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B
5.6to10.6MHz
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C
4.6to10.6MHz
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D
5.6to9.6MHz
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Solution
The correct option is A5.6to10.6MHz For high-side tuning fLO=fm+fIF, PIF=600kHz=0.6MHz ⟹fLOL=5+0.6=5.6MHz fLOU=10+0.6=10.6MHz