[Elecraft] mmtty and k3 setup

[Richard Ferch]

It sounds as if the audio level from the sound card and/or the vox gain 
is set too high, and vox is being triggered by random noise.

Put the K3 in AFSK A mode and make sure MMTTY's mark tone matches the 
K3's Pitch setting in AFSK A. With MMTTY sending an idle signal 
(diddle), adjust the sound card output level and/or the K3's line in 
gain (using the MIC gain control) so you get 4 solid bars on the K3's 
ALC meter, with the 5th bar flickering, or as close to that as you can 
get. Once you have that level set correctly, don't touch it any more. 
Now adjust the vox gain so that the vox is triggered reliably and does 
not drop out during transmissions, but not so high that it is triggered 
by random noise while you are tuning. The vox gain, line in level and 
sound card level adjustments all interact, and they are different for 
different sound cards and different radios.

73,
Rich VE3KI


John wrote:

>      I have had all of this setup before and using  MMTTY and my K3
> working good.  But now trying to get it all working again with new
> computer running Windows 7 Ultimate.  My problem is: when I have mmtty
> running and try to move up and down the band every few khz my rig will
> key up briefly and I can not move freq. while it is keyed up or other
> functions on rig will not work either, which is probably because it is
> keyed up.  When I men briefly it like a fraction of  a second and do it
> several times before it stops.  I am just wondering what the bar graph
> on windows several audio mixer should be and what the bar graph setting
> should be under the mmtty setting in the sound mixer?  If I go above 50
> on the speakers, the rig keys a a lot. There is also a gray line that
> runs all the way across my mixer window so you can not raise the mmtty
> bar higher than the speaker bar graph.  My Vox setting on the rig is at
> .40 and running 50 watts of power and my mic line is set to 7.  To me
> its almost like the vox setting is wrong, like when you have the
> microphone  on and set too lightly and make a noise and it keys the rig.
> Any suggestions would be great.