ages in the antenna. The antenna converts the electro-magnetic waves into voltages used by the receiver. These are sent to the RF filter and amp.
             The rf filter selects the desired station from the many.
             It is adjustable so that the selection frequency can be altered.
             The selected frequency is applied to the mixer.
             The output of an oscillator is also applied to the mixer.
             The mixer and oscillator form a FREQUENCY CHANGER circuit.
             The output from the mixer is the intermediate frequency (i.f.)
             The i.f. is a fixed frequency of about 455 kHz.
             No matter what the frequency of the selected radio station is, the i.f. is always 455 kHz.
             The i.f. signal is fed into the i.f. amplifier.
             The advantage of the i.f. amplifier is that its frequency and bandwidth are fixed, no matter what the frequency of the incoming si
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