CORNELL-DUBLIER
model(s) wire color pin number
mark X

mark 20

hi-z(use an amplified mic only)
Audio 1
Ground 3
PTT 2
receive n/c
model(s) wire color pin number
mark 12 Audio 1
Ground 4
PTT 2
receive 3
model(s) wire color pin number
mark 26 Audio 2
Ground 4
PTT 3
receive n/c