Allard's solution makes it easier on the user, no need to switch in and out some BFO inductor when flipping between LSB and USB.
But Allard's solution requires a VFO that can operate at either 5mhz or 19mhz.
I have no idea if your DDS chip can send out a clean 19mhz, and no idea what kind of analog filter follows the DDS chip.
Jerry
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On Wed, Aug 9, 2017 at 07:52 pm, Jack Purdum wrote:
Changing the BFO frequency involves little more than changing the BFOFREQUENCY symbolic constant
