[Elecraft] K3 RTTY - PSK D

[Richard Ferch]

The MMTTY/EXTFSK combination can use DTR on a serial port for FSK 
keying, but I have no idea whether EXTFSK would work through LP-Bridge. 
Without EXTFSK, MMTTY uses TxD for FSK keying, not DTR, and that cannot 
be shared with radio control.

If you are already using MMTTY, by any chance does that mean that you 
have an audio cable from the K3's LINE OUT to your computer's sound 
card? If so, a second audio cable from the sound card's output to the 
K3's LINE IN is all you need to do AFSK RTTY. The K3's AFSK RTTY is just 
as good as its FSK RTTY, so there is no reason to insist on FSK.

73,
Rich VE3KI

PA3A wrote:

> The idea was to use LP bridge.
> Send the RTTY keying via a com-port from MMTTY, and control the rest of
> the K3 via another com with N1MM logger. Since there's only one cable to
> the K3, all signals should run  over the same cable, just like the
> combination of rig control and cw keying over DTR.
>
> I donot know whether it would work, but if it would, then K3 is up for a
> new menu item: RTTY via DTR   :-)
>