@K0TX ,
I’ve been wondering how difficult it would be to get a similar cable made except using a 2 pole plug for the 2.5 mm plug. Based on how quickly you went from discussing pin outs to stocking a new cable in this thread: Cable for Anytone AT-D578UV III Pro & Plus - #8 by K0TX
it appears to be relatively easy.
Also, I’m sorry I never thought to offer this before, would you be interested in me sending you the FT-65 cable and temporarily my FT-65 so you can see what you think?