[Elecraft] K3: Odd ALC behavior

[Wes Stewart]

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 <wes_n7ws at triconet.org> 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.
>>
>> Regards,
>>
>> 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.
>>>
>>> 73,
>>>
>>>     ... Joe, W4TV
>>>