RTTY FSK

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RTTY FSK

Robert Fanfant-2
I currently have N1MM integrated with FLDigi, a SignalLink unit, and an RS232 interface to the K3. All works well using AFSK with the K3 in USB mode.

Can someone direct me on how to setup my K3 for FSK RTTY? Would like to know what is needed to make the switch to FSK such that the K3 can be used in DATA mode instead of USB, while still using N1MM/FLDigi integration and an RS232 interface.

Thanks in advance.
-rob N7QT
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Re: RTTY FSK

Joe Subich, W4TV-4

> Would like to know what is needed to make the switch to FSK such that
> the K3 can be used in DATA mode instead of USB, while still using
> N1MM/FLDigi integration and an RS232 interface.

fldigi *does not support an RS-232 interface for FSK*.  Look in the
fldigi help files for pFSK (pseudo FSK) and build that circuit to
convert on/off keyed audio tones to FSK.

However, *any program* capable of AFSK/PSK can be used with the K3 in
DATA mode simply by selecting DATA A (for wideband PSK and AFSK in
USB) or AFSK A (for narrow filter AFSK in LSB).  See the K3 Owner's
Manual information on DATA Sub-modes.

73,

    ... Joe, W4TV


On 2014-09-25 11:15 AM, Robert Fanfant wrote:

> I currently have N1MM integrated with FLDigi, a SignalLink unit, and
> an RS232 interface to the K3. All works well using AFSK with the K3
> in USB mode.
>
> Can someone direct me on how to setup my K3 for FSK RTTY? Would like
> to know what is needed to make the switch to FSK such that the K3 can
> be used in DATA mode instead of USB, while still using N1MM/FLDigi
> integration and an RS232 interface.
>
> Thanks in advance.
 > -rob N7QT
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