Is it possible to interface rev. 1.5 with the Elecraft KX3?

Looking at the store, the Elecraft cables are only compatible with revision 1.6 and later. I recently purchased a used one on eBay without knowing it was a revision 1.5.

What differences make the Elecraft KX incompatible? Are there any workarounds?

With Digirig Mobile rev 1.5 you can interface Elecraft KX for audio and PTT, but not serial CAT control. The older version didn’t have RS-232 serial lines voltage converter chip. This connection will require custom cables. Let me know if you want to pursue that.

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