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Chapter 16 ANCIENT MODULATION And other topics
www.w1npp.orgCRYSTAL SETS TO SIDEBAND ... Chapter 16 ANCIENT MODULATION And other topics When I got back into ham radio 9 years ago, my ham friends told me that amplitude modulation (AM) was extinct. ... had passed the 9.000 MHz RF double sideband signal through the crystal filter to cleave off the