Headset Adapter for Icom IC-A110 and IC-A120 air band mobile radio. When using an optional headset via the adapter with the Icom IC-A110 / A120, the transceiver outputs your transmitted voice to the headset for monitoring.
Adapter accepts most general aviation headsets with standard dual plugs.
Icom part OPC-871A (formerly OPC-871)
Headset Adapter for Icom IC-A110 and IC-A120 air band mobile radio. When using an optional headset via the adapter with the Icom IC-A110 / A120, the transceiver outputs your transmitted voice to the headset for monitoring.
Adapter accepts most general aviation headsets with standard dual plugs.
Icom part OPC-871A (formerly OPC-871)
Q: for both the jacks 1/4" 6.23mm or is 1 smaller than the oher
A: This type of plug consists of a PJ-055 or M642/4-1 (. 25 inch / 6.35mm) and a PJ-068 or M642/5-1 (. 206 inch / 5.25mm) plugs.
Q: how does this install into an IC-A120
A: You can view the full installation instructions by viewing the PDF Instruction Manual here.
Q: is the small receptacle coming from one of the larger ones a hookup for a ptt? Does it use a standard 1/8" mono plug?
A: Yes, the small female plug is for use with a push-to-talk and is 3.5mm.