[Elecraft] K3/MMTTY/Signalink Problem

[Greg]

Understood...thanks.

I had a similar problem when I first got a SL USB.  The manufacturer said
the slider must be at max and then use the front panel pot and radio line
in control to manage the desired audio level.  When I did that I was able
to get the desired output.  I did not mean to crank all the controls to
max....that indeed would be a mess.
On Wed, Oct 15, 2014 at 7:34 AM, Joe Subich, W4TV <lists at subich.com> wrote:

>
> Be very careful ... Signalink USB lacks sufficient bypassing on
> the internal 5V distribution, lacks regulation on the CODEC and
> op-amp V/2 reference, and lacks sufficient filtering on the USB
> power line.
>
> Most sound card show increased distortion with Playback gain above
> 80%.  Cranking the audio gain to 100% in the playback mixer can
> cause it to become *VERY DIRTY* if power supply and regulation is
> not properly addressed.
>
> 73,
>
>    ... Joe, W4TV
>
>
>
> On 2014-10-15 10:03 AM, Greg wrote:
>
>>  Another thing to check:
>>>
>>> In your sound devices find the signalink USB codecs and open the playback
>>> mixer.  The slider needs to be at 100....all the way to the top.
>>>
>>> Also, there are jumpers in the SL.  One is for low output or high output.
>>> Make sure the jumpers are set to the high positions.
>>>
>>> 73
>>> Greg
>>> AB7R
>>>
>>>
>>
>>
>>
>>>
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