[RTTY] NAQP RTTY on NCDXF Beacon]

[John Becker]

Now Joe, RTTY has *always* been lower sideband.
At least the 35 years I have been running it.


At 06:03 PM 1/10/06, you wrote:

>Robert,
>
>The standard way of reporting the frequency of a FSK signal is
>to report the RF frequency of the MARK (higher) tone.  Yaesu,
>among other radios, will automatically offset the display frequency
>by the mark tone when in RTTY mode.  Reporting the "carrier" frequency
>of AFSK operation is just plain wrong ... particularly when the tones
>can be high/low/non-standard and the sideband can be either upper or
>lower.
>
>Similarly, PSK operation should be reported as the RF frequency ...
>not the dial (suppressed carrier) frequency and some offset (which
>direction)?
>
>73,
>
>     ... Joe, W4TV
>
>
>
> > -----Original Message-----
> > From: rtty-bounces at contesting.com
> > [mailto:rtty-bounces at contesting.com] On Behalf Of robert
> > Sent: Tuesday, January 10, 2006 6:02 PM
> > To: RTTY at contesting.com; Wolf (DL6JZ)
> > Subject: Re: [RTTY] NAQP RTTY on NCDXF Beacon]
> >
> >
> > Hi Wolf.
> > thanks for all.
> > What kind of a radio di you have?
> > I ask because I never have heard about a radio who sends DC to the rf
> > stages.
> > In the KAM+ Manual and in the arrl handbook, also in the manual for my
> > kenwood radio as well in the manual for the dxp38 modem I see
> > the same thing about the frequency from the transmitting starion.
> >
> > Frequency sent = displayed frequencu +- the mark/shift tones.
> >  the plus or minus depends if you send USB or LSB.
> >
> > in my case 14.100 + 2125 = 14.102125 KHZ
> > also  14.097875 + 2125 = 14.100 khz
> > soundcards use different frequency but it can be calculated.
> > I was testing this with my friend tonight and it did work this way.
> > Me transmitting on 14.09787 KHZ and he did receve me on 14.100 KHZ
> > by doing revers FSK I had to use minus and get the other sideband.
> >
> > regards robert tf3tty...... 73
> > ----- Original Message -----
> > From: "Wolf (DL6JZ)" <dl6jz at t-online.de>
> > To: <rtty at contesting.com>
> > Sent: Tuesday, January 10, 2006 8:23 AM
> > Subject: Re: [RTTY] NAQP RTTY on NCDXF Beacon]
> >
> >
> > > Hi Robert,
> > >
> > > first, you must be a good RTTY-contester because we had a QSO in the
> > > Roundup.  :-))
> > >
> > > Plus/minus 2 kHz is too much for the free space for the NCDXF beacon
> > > system. I think plus/minus 500 Hz will do it.
> > >
> > > I am running FSK. And when my radio shows 14100 kHz then my
> > two tones
> > > will be at 14100kHz and 14099.830 kHz.
> > >
> > > Soundcard users who are running AFSK can configure their software to
> > > show the real mark frequency. So I think there should be no
> > problem with
> > > transmitting in a forbidden area.
> > >
> > > 73 + 55
> > > Wolf, DL6JZ
> > >
> > >
> > >
> > > -----Original Message-----
> > > Date: Mon,  9 Jan 2006 19:41:41 +0100
> > > Subject: Re: [RTTY] Fw: RE: NAQP RTTY on NCDXF Beacon]
> > > From: "robert"
> > > To: ,
> > >
> > > hi all.
> > > Those who use souncards or use FSK keying and set the rig to 14.100,
> > > where
> > > does the signal go.
> > > FSK shift is 2125/2295 for mark/space or 1275/1445 mark/space. When
> > > using
> > > soundcards this can be almost anywhere, I use 1100/1300
> > because it goes
> > > into
> > > the filters passband on my rig.
> > > The 2 KHZ safetyzone is the minium to set for us not to
> > interfere with
> > > the
> > > beacon. It should be 2500 HZ. There are too many hams out there who
> > > don't
> > > know about this mark/space stuff.
> > > But on the other hand I wonder those who send/receve on the beacon
> > > frequency, don't they have interference from the beacon??
> > >
> > > regards & 73 tf3tty robert..
> > >
> > > p.s. I wonder how I am doing as a rtty contester!
> > > am I good or bad?
> > >
> > > c u all
> > >
> > >
> > >
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> > > RTTY at contesting.com
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> >
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>
>
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