Hi Tom.
Try this.
File: AM_Receiver-rs-01.zip
What I changed.
Set VC to constant 100 pf so we can see what's going on and changed
R4 to a current source (using discretes).
Original:
Total Harmonic Distortion: about 17.5%
Modified:
Total Harmonic Distortion: 14%, 13% and half volume.
Not sure how it would work in the real world because it's also very
sensitive to C2 values. For example, if you double C2, the audio starts
out at lower amplitude (like an expander) but the THD goes down to about 5%.
Also to Jim. Thanks for the correction re. AM band.
