[Elecraft] AFSK-A with K3s

[Mike Dodd]

OK, I think I have it straight now. Thanks to all, and especially to 
Gene, N9TF who emailed me off-list.

For the benefit of all, here is what I learned today:

I _do_ need to turn on VOX if I want to use a logging program that grabs 
the USB control port (COM5 in my case). I had MMTTY set up to key the 
rig on COM5, but it occurred to me that I didn't have my logging 
software open at that time. So PTT via COM5 is out, VOX is in.

I don't normally use VOX, so my MENU: VOX gain was set to 0. Once I 
turned it up to 8 or higher, the MMTTY tones keyed the rig just fine.

MENU: MIC SEL is automatically set to LINE IN when data mode AFSK-A is 
selected. This automatically reverts to my normal FP mic selection when 
I switch back to a voice mode.

The mic gain must be set for 5 bars on the ALC meter. On my K3s, this is 
a MIC setting of only 2, and the fifth bar doesn't flicker as it does 
with voice, because a steady tone is being transmitted.

The MIC gain control sets the LINE IN gain. This automatically reverts 
to my normal mic gain when I switch back to a voice mode.

How convenient is that! THANK YOU, Elecraft.

Bottom line (on my K3s, at least):

* DATA MD = AFSK-A
* VOX on
* MENU: VOX GN = 8 - 10
* MENU: MIC SEL = LINE IN (automatic with AFSK-A)
* MIC gain = 2
* PITCH = Mark frequency and shift to match those set in MMTTY

MMTTY:
* Setup, Sound card = USB audio CODEC
* Setup, Misc device identifiers = RX 0, TX 1 (TX 0 is the PC's speakers)
* Setup, TX, radio command, port = NONE if using logging software that 
needs the COM port

I think that about covers it. Thanks again to all who offered suggestions.

-- 
73, Mike N4CF
Louisa County, VA USA
Elecraft K3s/100
Carolina Windom up 45'
http://n4cf.mdodd.com