Define: (i) Image frequency and (ii) Double spotting

1 Answer

i)Image frequency:- Image Frequency is defined as the signal frequency plus twice the intermediate frequency. It is denoted as fsi = fs+2fi

Where,

fs = Signal Frequency

fi =intermediate frequency.

ii)Double spotting:-

Double spotting means the same stations get picked up at two different nearby points,on the receiver dial.

It is due to the poor front end selectivity i.e., inadequate image frequency rejection.


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