It's been a good few years since I looked at Bob Heil's stuff but there were two choices for the mic inserts. HC-5 was the normal frequency response insert and the HC-4 was the DX insert - a lot sharper sounding audio.
this post was submitted on 24 Jun 2023
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The iC Electret element is a condenser mic, and requires power from the radio. As far as I know, only Elecraft and Icom radios are designed to do that, so you'd want the Dynamic element. Remember to budget for the correct adaptor and some sort of PTT switch - I personally prefer a footswitch to keep my hands free for logging.
Thank You.
No help here. I also use apple head phones
Yeah, they are nice. I was just hoping to upgrade the hand mic. Then I went down a rabbit hole. So I was thinking when out on the lawn I could go total old man style and use a headset. In the end it still means I have to do something with my HM-31. Maybe I'll just modify the HM-31.
So I bit the bullet and got the pro set 7. These things are super comfy and very good at blocking out the world around me. Thank you everyone for the input and recommendations.