On the back panel of the ContestConsole...
MIC
This is the socket for your normal microphone.
1 = MIC input
2 = +8V low current
3 = Mem/Freq control
4 = Squelch
5 = PTT
6 = PTT GND
7 = MIC GND
8 = AF out
AUX MIC
This socket takes a 3.5mm stereo plug.
● Tip = MIC
● Ring = 8V supply (low current - for electret microphones)
● Sleeve = MIC Ground
Notes
Only one microphone should be plugged into the ContestConsole at any time (either
MIC or AUX MIC - not both)
TUNE
4 pin DIN socket for connection of the optional low power tune lead.
PTT
Generally used for a foot-switch. This socket takes a 3.5mm stereo or mono plug.
● Tip = PTT
● Ring = not used
● Sleeve = Ground
Version 1.0
Issued 4-September-2018