M.H. SCOTT
model(s) wire color pin number
DAK MARK IX Audio 1
DAK MARK X Ground 2
  N/C N/C
  Common 3
  PTT 4
  receive N/C
model(s) wire color pin number
DAK MARK III Audio 1
DAK MARK II Ground 4
DAX MARK V N/C N/C
  Common 3
  PTT 2
  receive 5