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Hi Group,
I am looking at moving the old CB up to 10meter CW/SSB, One thing I have never seen is the addition of a BFO circuit to copy SSB and CW. The radio has a first IF of 10.695 MHz and the next one is 455KHz. I believe that 455KHz is the place to add the BFO and I think that the 455KHz IF must be mixed with another frequency, say either +/- 1KHz to get the sidetone. I don't know if this would work for SSB reception? How about Double-side band modulation, it would have both LSB and USB but at least it would be interesting to experiment with. If you know of a circuit or article, please post. I look forward to your posting. Paul KJ4UO EM60 |
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