Jim Weir writes:

Because there are those of us who see clipping a handheld to a window with a
rubber duckie is not the way we want to do things. Why buy a $300 headset and
an audio panel to get the best possible audio into your aircraft transceiver if
you aren't willing to do the same thing for your ham rig?

It really ain't rocket science, and besides, somewhere I read that "fostering
advancement of the state of the radio art" had a place in Part 97.

Yep.

I just got done adapting an IC207H VHF/UHF rig to a King KMA28 audio
panel. It wasn't rocket science by any stretch of the imagination. In
fact, about four or five passive components in a small aluminum
enclosure is all it took. At some point I might want to add sidetone,
which will involve a few more components. But either way, it's
pretty simple.

-jav w6vms