[Elecraft] K3 - RTTY on 30 meters

[Iain MacDonnell - N6ML]

Hi John,

You didn't say what mode and data sub-mode the K3 was in. It sounds
like you may have been in the "FSK D" sub-mode where you wanted to be
in "AFSK A", based on the facts that you heard a "carrier" when
transmitting and that you mentioned audio cables as your interface.
Data sub-modes are remembered per-band.


That doesn't quite explain the reversed tones, though... unless you're
actually setup to use "DATA A" mode on other bands, which is upper
side-band-like.

    ~Iain / N6ML


On Tue, May 18, 2010 at 8:05 PM, John E. Reiser <reiserj at optonline.net> wrote:
> Hello out there,
>
> Yesterday a friend asked me to give him a contact on 30-meter RTTY.  I had never been on 30-meter RTTY before, but I agreed to give it a try.  But then I found that my K3 had no RTTY modulation_  just a carrier on 30-meters.  The T-R switching worked fine.
>
> Let me explain that I have been using my K3 without a hitch in RTTY mode for the past two years on the 20, 15, and 12 meter bands, and it continues to work fine on those bands.
>
> My K3 is # 384 running FW 3.97/2.58.  I simply have two stereo audio cables connecting the speaker and mike jacks on my notebook computer to the K3's line in and out jacks.  T-R switching is via the K3's RS232 jack and my Keyspan USB-Serial adapter.  My 30-meter antenna is resonant, with 1.2-1 VSWR across the entire band.  RTTY software is MMTTY.
>
> The other odd thing that I observed was that my friend's signal was reversed on 30-meters.  That is, I couldn't decode him without invoking the reverse button in MMTTY.  I later had a QSO with him on 20-meter RTTY, and he was not reversed on that band.
>
> Any ideas?
>
> Many thanks and 73,
>
> John, W2GW
>
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