Quote:
Originally Posted by old_tv_nut
The general concepts of frequency and amplitude vs. frequency apply in alignment, but the frequencies you work with there with are much higher than audio frequencies: intermediate frequencies (IF) and radio frequencies (RF). IF and RF are not directly audible frequencies - you need instruments to detect and measure them.
Topics to study:
Amplitude modulation
Superheterodyne receiver
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The Livingston is a Superheterodyne set, I know that means that the radio generates a competing frequency that cancels out the carrier frequency to allow for amplifying the audible frequency spectrum.
I know that testing equipment requires a scope, specific voltage controlled equipment (variac, though I don't yet posses one), a vttm, bias supply, signal and sweep generation, etc. I'm studying how to use them.