In setting up my first HotSpot I have been researching how to programme a raspberry pi device, and then setup my ID-51A.
I came across the following website, that had all the resources I was searching for, and an interesting paper called "D-Star for the Analogue Guy"-an interesting read..
https://www.charlottedstar.org/dstar_tips.htm
I would suggest that this is worth looking at.
Great Phillip,
Thanks !
Craig