This TJT-125 (5 Contacts) Mono Jack (EDMO# CIJ1256C-4) is for use with CIX cases with Hirose 6 pin plugs.
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...
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....
HEADER ASSEMBLY/ICS KEY VOX SLIDE & DPDT PTT W/MIC HI INTERRUPT
ICS Slide switch & XMIT 3NO PTT without microphone interrupt.
CIGJ93 HEADSET ADAPTER ASSEMBLY/GENERAL AVIATION JACKS TO U-93A/U PLUG/WIRED CIVILIAN HELO/BUILT IN CASE/NO CABLE