Hmmm.

If memory serves, Joe's DDS board was capable of being both the "A" and "B" VFO in & of itself. (If I'm wrong, I may be thinking of another one that's been out there). If that's truly the case, you would no longer require the external VFO with a Corsair/Corsair II that's had the DDS upgrade. Considering the going price for the 263/263G Remote VFO, that is an upgrade worth considering.

There may be a small market out there for a DDS based Remote VFO that would be the functional equivalent of a 263/263G (or similar 5 MHz based VFO for other radios), with the enhancements of a dual VFO in one. Especially to someone who has a fully functioning analog radio, but would like the digital readout on the RVFO, along with the other "enhancements" that the DDS provides, all without making modifications to the main rig.