Dave Johnson, WB4JTT has written up a document on how to use the DG5 emulator as a Heathkit SB-650 emulator! The Heathkit SB-650 is an external Nixie tube display, much like the Kenwood DG5. In fact, it uses the same 3 frequency scheme as the DG5.
You can download his detailed document here: USING THE KV6O DG-5 EMULATOR IN HEATHKIT EQUIPMENT.PDF
I have a SB-102 waiting to get on the bench, I’ll defiantly have to adapt it for use with the DG5/SB-650.
I have created a project page to track this offshoot – hopefully we’ll get some build pics!