I found those 4.224 Crystal oscillators (ex equipment) on eBay .
Divide 4224 by 32 (first 8 and then make the quadrature signals), and the LO frequency ends up on 132 kHz. Not bad for a 136 kHz SDR.
Early SSB in India: Espionage, Stolen Secrets, and Kleptomania
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*Earlier this month I had stumbled across a 1964 QST article entitled "A
Sideband Transceiver, VU2 Style." I forwarded the link to Pete N6QW,
Grayson...
23 hours ago
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