[Elecraft] RTTY Problems on K3

[Jim Rhodes]

Over the years I have built all of my interfaces. Started with
optoisolators but when trying to go SO2V I couldn't make them work with the
outputs paralleled.  Now I have 2 db9 serial plug with a single 2n2222 & 1k
resistor in each, outputs paralleled into a db15hd for the acc on the K3.
PTT is via CAT. This is the simplest solution that I have found. I use I/O
usb to serial converters with 4 or 8 ports. Enough to run everything on
rs232. Only use usb for CAT and sound. This is the least number of cables
and connections I have used, and I like how it works. Am really starting to
regret selling the house and moving into an apartment building though.

On Sun, May 24, 2020, 08:45 Bill Gillenwater <k3sv at pa.net> wrote:

> Thanks for the help on this. Found the problem. All working now. My eyes
> don’t work like they used to. The PTT side of my home brew switching box
> was not working. Re-solder and all good.
>
> 73 Bill K3SV
>
> Sent from my iPad
>
> > On May 24, 2020, at 6:54 AM, Ed W0YK <ed at w0yk.com> wrote:
> >
> > 
> > CAT and FSK/PTT must be on separate COM ports.
> >
> > 73,
> > Ed W0YK
> >
> >
> > -------- Original message --------
> > From: Nr4c <nr4c at widomaker.com>
> > Date: 5/23/20 22:33 (GMT-08:00)
> > To: k3sv at pa.net
> > Cc: elecraft at mailman.qth.net
> > Subject: Re: [Elecraft] RTTY Problems on K3
> >
> > I think you need another program to make this work. It intercepts the
> serial port for the FSK/PTT and makes it all work together.
> >
> > I use 2-Tone instead of myth and seem to get by with just it and n1mm.
> >
> > For interface I use my WINKEYER-USB with the latest firmware. I use a
> “Y” adapter in the KEY line. The second line goes to K3/Acc2 FSK pin.
> “Diddles” go to FSK and “Dit-Dahs” go to CW.  works well.
> >
> > Sent from my iPhone
> > ...nr4c. bill
> >
> >
> > > On May 24, 2020, at 1:14 AM, "k3sv at pa.net" <k3sv at pa.net> wrote:
> > >
> > > I am fairly new to the K3 but have no problems setting up N1MM and
> other software, getting things to work properly. My problem is I cannot get
> RTTY to send/TX. I have made a homebrew interface with optoisolators for
> both the FSK line and the PTT line. I'm going from a separate serial port,
> pins 3 and 7, for FSK and PTT, to the Assy(15 pin) connector. To pins 1 for
> FSK, 4 for PTT and 5 for ground.
> > >
> > > When I run MMTTY I cannot get the rig to key. If I switch to SSB or CW
> and use the CAT line to work the PTT, no problem. If I switch to RTTY and
> try to use the CAT line it will not key the TX. I've tried a variety of
> setting in MMTTY and get no TX. I have a 1000MP set up with a similar
> homebrew interface and have no issues.
> > >
> > > Can anyone shed some help on me?
> > >
> > > 73 Bill K3SV
> > >
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