Yep. I operate RTTY/PSK/JT65 in DATA A/AFSK mode with my K3 using 2 $5
stereo cables from Radio Shack, and N1MM, MixW, or WSJT. I did it for
quite awhile with my K2 -- headphone jack to soundcard LINE IN and
soundcard LINE OUT to the mic connector through a little T-pad I built
into the cable with 3 resistors and some shrink wrap.
Sometime back, there was an increase in the number of posts to this list
with digital problems and issues. I started counting [sorry, math major
here :-)] and over 90% involved problems with some an external interface
box, creation of virtual serial ports and sometimes a combination of
external devices and software.
Since the K3/KX3 generates the ultimate FSK in computer code in the DSP,
there is exactly zero difference between AFSK and direct FSK in the RF
output. AFSK is quite a bit simpler to connect up however. PTT issues
also come up fairly frequently ... DATA A/AFSK [in the K3] allows you to
just use VOX -- totally painless.
73,
Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org
On 2/27/2014 6:50 AM, AD0ES wrote:
Sean,
You don't even need a computer interface with the kx3. Buy the $19
cable set elecraft sells for this purpose and your ready to rock. I
am using my new kx3 with nothing more than audio in/out to my laptop
and the included USB cable for control via HRD. Works great. I
managed a 5 watt FeldHELL contact from CO to IL on 20m with a simple
dipole tossed out my office second story window.
Steve AD0ES
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