[Elecraft] K3S USB and MMTTY running SPLIT additional

[Joe Subich, W4TV]

> MMTTY does NOT recognize the K3S sound card through the USB setup on
> the above computer as being stereo and one can not select which audio
> stream from the K3S is used by the program. That is a problem with
> Windows 7 Professional, not MMTTY.

MMTTY can and will recognize the PCM2903 sound chip as stereo if both
Windows and MMTTY are set up correctly.  First thing to do is open the
Sound Control Panel and select the "Recording" tab for USB Audio CODEC
(the PCM-2903).  Then select the "Advanced" tab and made sure the
Default Format is set to a "2 channel" format (preferably 2 channel,
16 bit, 48000 Hz (DVD Quality)).

In MMTTY, set the Source (Options | Setup | Misc) to either Left (main)
or Right (Sub) and set the clock to 1/4 the sample rate set for the
"Default Format" above.

You will need to run two copies of MMTTY - one for main and the other
for Sub.

73,

    ... Joe, W4TV


On 4/4/2016 11:10 AM, Jim Sheldon wrote:
> I should have been more specific in my post on observations.  First off,
> I have been getting a whole bunch of replies with "tutorials" on how to
> run split, how RTTY works, etc.  These are absolutely not needed.  I've
> been on RTTY since first licensed back in 1963, I know RTTY is LSB, etc.
>   I also have been using MMTTY since Mako first wrote it and know how to
> set it up.  I'm running true FSK keying via the K3S accessory connector
> and a COM port.  This works fine.
>
> The K3S (note S, not K3) internal USB sound card outputs stereo, this I
> also know.  The 64 bit version of Windows 7 Professional which I have
> running on an HP 6300 small form factor computer with an Intel Core i5
> processor (true quad core) at 3.5 GHz and 16 gig of RAM.
>
> MMTTY does NOT recognize the K3S sound card through the USB setup on the
> above computer as being stereo and one can not select which audio stream
> from the K3S is used by the program.  That is a problem with Windows 7
> Professional, not MMTTY.
>
> I can easily use the sound card in the computer, but then I lose much of
> the single cable functionality of the K3S built in USB.
>
> I was merely observing that MMTTY WAS recognizing both streams
> simultaneously and COULD apparently decode both.
>
> Thanks for the newbie tutorials guys, but they are not needed.
>
> Jim - W0EB
>
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