Don,
I think the use of the K3/K3S on digital modes is easy. If you are
using soundcard digital modes, put the K3/K3S into DATA A mode, and
adjust the soundcard output level to about 75%. Change the MIC SEL to LINE.
You connect the soundcard line out (Spkr) to the K3 LINE IN and the
soundcard line in to the K3 LINE OUT. If you are using the K3S internal
soundcard, those cables are not used. Make certain there is nothing
connected to the K3S LINE IN jack.
Adjust the K3 LINE level ("MIC GAIN") to produce 4 bars solid with the
5th bar flashing on the ALC meter while your digital mode application is
'transmitting'. You can put the K3 into TX TEST for that adjustment so
you do not emit any RF.
If you are doing RTTY, use the AFSK A data submode, it defaults to LSB.
DATA A defaults to USB.
The major problem with folks starting out in digital modes is not with
the radio, but with the digital mode application. It requires setup,
selection of the COM port, selection of the right soundcard, the correct
rig, and other settings. So refer to the instructions for whatever
software you are using.
If those instructions tell you to set the radio's power to full and use
the audio level to adjust the power output, ignore that (and similar
internet advice) - that does not work well with Elecraft gear, use the
information given above to set the audio level and set the desired power
with the power knob.
73,
Don W3FPR
On 3/9/2017 9:13 AM, Don Pomplun wrote:
Thanx for all the good points raised for this RTTY-wannabee, morphing
from CW. I always get Fred's books even before buying the Elecraft
hardware, but even with his excellent explanations of the terse official
manuals, digital mode use is still a lot of digestion. e.g., it was
only yesterday that it became obvious that the K3S has its own sound
card built in (I think I'm right). I draw the analogy between the K3 and
what was said of Mozart: '"too many notes".
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