Multiple choice

A super heterodyne receiver is to operate in the frequency range 550 kHz - 1650 kHz, with the intermediate frequency of 450 kHz. Let R = $\dfrac{C_{max}}{C_{min}}$ denote the required capacitance ratio of the local oscillator and I denote the image frequency (in kHz) of the incoming signal. If the receiver is tuned to 700 kHz, then

  1. R = 4.41, I = 1600

  2. R = 2.10, I = 1150

  3. R = 3.0, I = 1600

  4. R = 9.0, I = 1150
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