[Elecraft] AFSK-A with K3s

[Gary Smith]

Mike,

This was a very timely thread for me in 
that I have been trying to get MMTTY 
working with the K3s and missed any 
contacts with the FT4 on RTTY and only 
made a RTTY Q with the VK0 because I used 
the memories in the K3s to send RTTY via 
FSK, not MMTTY. In fact, what I was 
transmitting was just a key down and not 
the RTTY I thought I was putting out and I 
was inadvertently QRMing every time I 
transmitted.

I asked on the MMTTY yahoo group about how 
to sync the K3s properly and a very 
helpful ham from VK finally helped me 
figure out what I was doing wrong.

The info in this thread is also very 
helpful. I did find that for some reason 
when I would select AFSK A, it was still 
set at FSK D and I must not have properly 
saved the AFSK setting. Now I have it 
correctly set and its working beautifully.

I am so satisfied with the K3s, it is just 
a magnificent piece of electronics and 
makes my day better.

73,

Gary
KA1J
> 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
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