Ed W8EMV 
In looking for #ardopc I am having a bit of a hard time locating a proper source tree.
I see
https://github.com/DigitalHERMES/ardopc
"#ARDOP (Amateur Radio Digital Open Protocol) #TNC implementation by John Wiseman (#GM8BPQ). Unofficial repository."
but the latest commit is 2 years ago.
It looks like upstream is at
https://www.cantab.net/users/john.wiseman/Documents/ARDOPC.html
with a 2018 date on the docs.
