[RTTY] microHAM & Kenwood TS-450s

[Joe Subich, W4TV]

 > 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
>
>
> _______________________________________________
> RTTY mailing list
> RTTY at contesting.com
> http://lists.contesting.com/mailman/listinfo/rtty
>