Civilian ICS (Inter Communication Systems) are designed to be compatible with high impedance headsets with amplified microphones. Military ICS Systems are configured to accept low impedance headsets with unamplified microphones....
Hi to Low Impedence Adapter.Mates civilian headset (amp'd mic and 300ohm earphones in parallel) to military ICS (5ohm dynamic mic input and 10ohm phones output) under panel type. 1ft cables...
HEADER ASSEMBLY/ICS KEY VOX SLIDE & DPDT PTT W/MIC HI INTERRUPT
ICS Slide switch & XMIT 3NO PTT without microphone interrupt.
This headset adapter (EDMO# CIGJ93) has General Aviation mono jacks (in case) to U-93A/U plug connectors and no cable.
This headset adapter cable (EDMO# CIGJ84/6-) has General Aviation mono jacks (in case) to U-384/U plug (wiring option 6) connectors and a 12-inch straight cable.