[WT-support] 2Tone RTTY encoder support?

Bob Wilson, N6TV n6tv at arrl.net
Tue Aug 20 18:23:25 CEST 2013

On Tue, Aug 20, 2013 at 12:43 AM, CT3FQ <ct3fq at sapo.pt> wrote:

> How do you transmit FSK with 2tone and win-test?

According to the "2Tone first install.pdf":

"Pseudo FSK is a setup option. It transmits a tone of 5KHz on the selected
sound card left and right outputs for each space bit and silence for mark.
This can be used for FSK keying of rig.  Suitable detector circuit can be
found at http://www.w1hkj.com/FldigiHelp-3.20/PseudoFSK.html but use 0.1uF
capacitors in place of 0.5uF."

That was a little disappointing since most of us are already set up to use

On 20-08-2013 08:15, Juha Rantanen wrote:
>  Win-Test at least opens 2Tone encoder window same way as it opens MMTTY
> decoder window. I don't have any radio connected now so could someone check
> whether this really works or not with live signals and clicking callsigns
> on RTTY (Radio 1) -window.
> Win-Test seems to start and talk to 2Tone just as well as it does for
MMTTY.  I was not able to just rune 2Tone.exe stand-alone (instant crash).

Using Win-Test, I was able to open two different copies of 2Tone by
installing it in 2 different directories, same as for MMTTY.  It looked
like it would decode and transmit OK.

Unfortunately, 2Tone doesn't generate any PTT signal, so it doesn't work
with Win-Test unless you press the footswitch or try to use VOX and AFSK.
 Win-Test doesn't generate PTT when you are in RTTY mode; it relies on the
other program to do that.  If you use VOX and SO2R, I'm not sure but I
think 2Tone may end up transmitting on two radios at once.  I didn't see
how to steer the 2Tone audio *output* Left = Left Rig, Right = Right rig.

The 2Tone AFSK output sounds good in PC speakers, but for some reason it
didn't sound so good when I set the sound card to "USB Voice Codec" and
tried to use LINE IN on the K3 in AFSK mode.  Maybe it has something to do
with level adjustments.

I was also disappointed that I couldn't set the AFSK pitch lower, to 915 Hz.

That's as far as I got.

Most people don't use Win-Test on RTTY except for casual contesting, in
which case MMTTY and FSK works fine.

Bob, N6TV
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