[Elecraft] K3S's built-in RTTY

[Don Wilhelm]

Actually, the K3 has isolation for the Line In and Line Out signals, and 
no interface is required for digital modes.  Just a computer soundcard 
and good quality audio cables so they do not pick up hum, buzz and 
noise.  PTT is not required either, use VOX.  Actually, the Signalink 
PTT is derived from the audio stream - so in effect, the Signalink has 
its own simplistic VOX which activates its PTT output.

For those using the K3, get an external soundcard, even an inexpensive 
one and use the K3's VOX - it will perform better and with lower noise 
than the Signalink.

For the K3S and a K3 that has the new KIO3B option installed, everything 
is the same, except the "external soundcard" (as seen by the computer 
application) is built into the K3/K3S and no audio cables are involved.

73,
Don W3FPR

On 3/8/2017 6:18 PM, Don Pomplun wrote:
like the SignalLink USB.
> Am I correct so far?
> So then fig 10-14 (Fred's book) gives me the impression that with this
> hookup, I can then run any RTTY software on the PC and the PC to K3S
> interfacing is all taken care of, right?