[RTTY] microHAM & Kenwood TS-450s

[John Merrill]

All the Kenwoods that I have run are opposite of the default fsk polarity in
the menu when run with Mmtty, Writelog and N1MM.

John N1JM

On Sat, Jul 9, 2011 at 8:39 AM, Joe Subich, W4TV <lists at subich.com> wrote:

>
>  > Hold down the 'm.in' key while turning on the radio.
>  >
>  > Check menu number 38.  It should be set to 'off' for normal FSK.
>
> If this is true (and I have no reason to doubt Tom), it is another
> case in which a Kenwood manual provides incorrect information about
> the operation of the radio.  The Kenwood manual states that "ON"
> represents a "closed" contact (switch "on") for Mark.
>
>   "When the FSK transmission key is shorted, you can change between
>   space transmission (off) and mark transmission (on)."
>
>     - TS-450S/TS-690S Instruction Manual, pg 53.
>
> Almost every modern FSK interface provides an open collector FSK
> output that is *closed* in Mark (pulled to ground) and *open* in
> Space.  This is the same as the "simple" transistor on the output
> of a serial port or USB to RS-232 converter for those using EXTFSK
> with MMTTY.
>
> 73,
>
>    ... Joe, W4TV
>
>
> On 7/9/2011 11:03 AM, Tom Osborne wrote:
> > Hi David
> >
> > Hold down the 'm.in' key while turning on the radio.
> >
> > Check menu number 38.  It should be set to 'off' for normal FSK.
> >
> > Are you using the ACC 2 jack on the back of the '450 for FSK?  You can't
> do
> > FSK through the mic jack like you can PSK.    73
> >
> > Tom W7WHY
> >
> > Hi  Is anyone using the microKEYER II with a Kenwood rig for RTTY?  I
> picked
> > one up to use with a TS-450s as a dedicated digital mode rig.  I've got
> > everthing working and have made a few PSK contacts but there's something
> > wrong with my RTTY signal.  MMTTY is configured for FSK; the microKEYER
> keys
> > up the rig and the rig is transmitting, but other stations only reply
> QRZ??
> > a couple times then continue their CQ call.  I was doing RTTY
> successfully
> > with AFSK thru a Signalink, how would I know if I was transmitting in
> > REVERSE?
> > Any help or ideas
> >
> >
> >      VE3VID         Located in rural Canada
> >
> >
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> >
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