Headset Connection from Heil Proset 4 to KX3

[Terry Domae]

Can anyone verify the following?

Headphones:  Heil headphones have a 1/4" stereo (200 ohms on the headset)
connected via a straight adapter to 3.5mm stereo jack of KX3 (?? ohms on
KX3)

Mic: 3.5mm mono (HC-4) mic (dynamic?) element - MIC bias set to OFF -
connected to the 3.5mm TRRS tip and sleeve;
PTT connected to 3.5mm TRRS ring 1 and 2. MIC BTN set to PTT UP.DOWN

I have an existing Proset 4 and would like to construct the proper adapter.

Thanks much, Terry KC6ROI
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