Nope, I was responding to Joe. I top posted right above his commentary per Elecraft list guidelines.

On 8/5/2017 12:47 PM, M. George wrote:
Wes, I understand that... assuming you are responding to me... I was asking
Joe what .inf file to modify and then reinstall the USB CODEC generic
driver to disable the irritating microphone boost which makes it too
sensitive.  I'm taking about the KIO3B USB CODEC here... Max NG7M

On Sat, Aug 5, 2017 at 1:24 PM, Wes Stewart <> wrote:

Except when the sound card is in the computer instead of the radio, "Line
In" is receiving signal from the program via the sound card 'speaker'
output, not the microphone.  Moving the card into the radio doesn't change
this. The only thing changed is it's too darned sensitive.


Wes  N7WS

  On 8/5/2017 9:39 AM, Joe Subich, W4TV wrote:

On 8/5/2017 11:14 AM, Wes Stewart wrote:

But IMHO, you need to put a 30 dB attenuator on the input of the
internal sound card; it is way too sensitive. I'm having to run the Windows
gain at less than 5% and Line In at 10 or less.

Actually, you need to adjust the options in the Windows *.inf file
used for the PCM-series CODEC (or use the codec that identifies as
line level).  Windows is turning on a 20 dB preamp in the CODEC.

I suspect if one sets the Windows Sound Options (Control Panel) to
display dB rather than percentage, the minimum level will be some-
thing like 16 to 20 dB!  That indicated the fixed 20 dB "mic preamp"
is engaged.


    ... Joe, W4TV

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