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A television receiver is tuned to receive a transmission with a carrier frequency 67 25 MHz Channel 4 If the intermediate frequency is 45 75 MHz what is the possible frequency ies at the local

A television receiver is tuned to receive a transmission with a carrier frequency 67.25 MHz (Channel 4). If the intermediate frequency is 45.75 MHz, what is the possible frequency (ies) at the local oscillator terminals of the mixer? If there are two possible frequencies, does one of them offer an advantage over the other? The local oscillator signal for the television receiver is generated at a lower frequency and multiplied by a factor of 512. Calculate the frequency of the oscillator and design a Hartley-type oscillator given that the tuning capacitor has the value 144 pF. Discuss the precautions you would take to minimize changes in the frequency of oscillation.

 

Jul 29 2020 View more View Less

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