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bitx20 v3 build – bfo

So I guess I’m going with a DDS vfo and bfo.

I put together the most of the bfo from the schematic, but instead of using a crystal, I will pipe in the dds signal into the base of Q9.

For the transformer, I did 8 trifilar turns of 28 gauge wire on an FT37-43 toroid.

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