[Elecraft] [K3] MMTTY

[Mike]

  Thanks Rich.

Turning up the vox gain did it, and I was able to turn down the computer sound card a 
bit to get the ALC reading correct. I didn't want to mess with the MIC gain, because 
it's touchy for me to set it for phone. I'd like to turn VOX off for phone only, but 
that's not possible yet.

The volume on my sound card is set using the "Main" and "Wave" sliders. No line out 
control, so anytime I adjust the volume, I'm hosing my RTTY settings. I'm going to 
look at an additional sound card, or maybe go to FSK.

What really threw me was that using one program it worked fine and one didn't, both 
programs use MMTTY, plus I've had the mark tone mismatch bite me before. I don't see 
a level control in MMTTY itself that would account for one working and one not.

But as they say "All's well that ends".

Thanks for the solution!

73, Mike

On 8/8/2010 10:45 AM, Richard Ferch wrote:
> Mike,
>
> I have not found this to be critical at all, once the audio and VOX levels
> are set. First, using manual keying adjust the level out from the sound
> card and the LINE input level on the K3 to just get the required 4-5 bars
> of ALC. Then increase the K3's MAIN:VOX GN setting until the output from
> the sound card triggers the VOX reliably.
>
> If you also use voice modes with VOX, your VOX GN setting might be
> different between voice and data modes. If this is a problem, my
> suggestion would be to try changing the gain distribution in the first
> step, by increasing the sound card output level and decreasing the K3's
> LINE input level. This should allow you to use a lower VOX GN setting.
> Just make sure that the sound card level is not set so high that the audio
> amplifier inside the sound card is overdriven.
>
> 73,
> Rich VE3KI
>
>
> NF4L wrote:
>
>>   How critical is the match between the K3  and MMTTY for it to
>> transmit using VOX. If I key the rig manually, or use DTR it's OK.
>> A different program (but using MMTTY) works just fine.
>
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