Question

A super heterodyne receiver is designed to receive transmitted signals between $5 $and $10 \,MHz$. The tuning range of the local oscillate for IF frequency $600 \,kHz$ for high-side tuning would be

• A. $4.6$ to $9.6\, MHz$
• B. $5.6$ to $10.6\, MHz$
• C. $4.6$ to $10.6\, MHz$
• D. $5.6$ to $9.6\, MHz$

Answer 1

Answer: (B)

For high-side tunning
$f_{L O}=f_m+f_{I F}, P_{I F}=600\ kHz =0.6\, MHz$
$\Rightarrow f_{L O L}=5+0.6=5.6 \,MHz$
$f_{\text {LOU }}=10+0.6=10.6\ ,MHz$