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Old 10th Oct 2010, 8:09 pm   #7
neon indicator
Retired Dormant Member
 
Join Date: Jun 2010
Location: Co. Limerick, Ireland.
Posts: 1,183
Default Re: Product detector circuit

It will do AM, but unless very stable local oscillators you'll easily get a hum to whistle. (the product of AM carrier and injected local osc). Note that a stable oscillator (BFO) doesn't solve it, you need the L.O. for the Superhet to be stable too. It will also do FM as well as SSB or Morse. The main original purpose of BFO was for Morse. To deliberately offset by about 800Hz from the carrier, not SSB.
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