If one wishes to run FT-8 that is a USB mode and DATA A conforms to
that. If you wish to run RTTY i.e. AFSK then use the AFSK A mode and
45 BPS. The AFSK A is LSB mode which conforms to the RTTY protocol.
Set-up between the radio and computer is accomplished with a single USB
cable. I use WSJT-X for FT-8 and MMTTY for AFSK. Both support CAT
control for frequency and mode. When you use DATA A or AFSK A the
compression and EQ for both RX and TX are negated and you do not have to
make any changes to your SSB settings. As Barry said, the audio level
from the computer and audio level adjusted in the software application
along with the MIC control on the front which, in those modes, are
actually LINE Gain. The ALC bar should show 4 solid and the 5th
flashing. Control the actual power output is accomplished by using the
PWR control on the radio and NOT in the software or computer.
73
Bob, K4TAX
On 3/19/2019 8:23 PM, Barry wrote:
Peter,
I'm not that familiar with Winwarbler, but I do run AFSK when
using RTTY. You could use DATA A on the K3s or AFSK. I prefer to use
the AFSK mode as it appear to work better than just using DATA A. The
set up should be about the same as you are using for FT8 using the
radio's built in sound card for the software you use; I prefer FLDIGI
just because.
The K3s does do FSK, but I'm not sure there is a real advantage
over running in the AFSK mode with some digital software. The data
mode as you call it is DATA A on the radio. It means you can feed the
output of some digital software into the radio and use any available
bandwidth. It also turns off the equalizers and compressor. AFSK has a
filter for each tone.
I'm not sure why you have had some much difficulty as I would
estimate it shouldn't take more than one day. ;-)
As you have a K3s, the set up really shouldn't be a lot of
trouble. Start by downloading FLDIGI and connecting the radio using
the USB connector. This allows both control of the radio and audio in
and out. Set the sound card in FLDIGI to USB CODEC line in and speaker
out. The radio will reflect a com port that will be used for control,
use it at 38,400 8N2. Now you're set to go. Use the mic control on the
front of the radio to set the level for the transmitter such that ALC
will show 4 bars and a flickering 5th. The power level should be set
with the knob that controls power. This should be how you set up for
FT8 using WSJT-X. All you need to do is set op mode in FLDIGI and go.
Have fun!
73,
Barry
K3NDM
.
------ Original Message ------
From: "Peter Dougherty" <[email protected]>
To: [email protected]
Sent: 3/19/2019 8:59:17 PM
Subject: [Elecraft] Sending AFSK RTTY
I haven't sent AFSK RTTY in almost 18 years so I'm not sure how I
should set
my K3s up for it. I will be using it with DX Labs WinWarbler
exclusively (I
don't do RTTY contesting, so no need to get it working with N1MM). I
have
the radio setup for USB communication exclusively. Before this I had a
MicroKeyer-II and was sending FSK. Given the rise of FT8 I doubt I'll be
doing much RTTY anymore, but I still need to have it available just
in case.
Using WinWarbler, I don't see any option to use a data mode for RTTY,
just
LSB (again, we're talking AFSK now). Isn't there a data mode built
into the
K3s for RTTY? Or is that just for FSK? Or is it a case of only using
data
mode for one (and only one) data format? At the moment, I have the radio
using Data mode for FT8.
Sorry for the confusion-it's been three days of trying to find the right
settings for everything, with only very limited success. Thanks as
always.
----------------------------------------------------
Regards,
Peter Dougherty
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