Hi,
of the newer ICOM rigs I had the 756-Pro3, IC7700 and now the IC-7851.
All of them allow to set (RX-) filter width down to 50Hz in the USB-(LSB-) Data
modes.
It's all software.... Looking into the manual the same applies for the 7600.
73 de Goetz DJ3IW
> -----Ursprüngliche Nachricht-----
> Von: RTTY [mailto:rtty-bounces@contesting.com] Im Auftrag von Joe Subich,
> W4TV
> Gesendet: Freitag, 27. Oktober 2017 14:44
> An: rtty@contesting.com
> Betreff: Re: [RTTY] Intel NUC, anyone?
>
>
> > I'll have to look at my Kenwood TS-590SG to see if it's the same as
> > the Icom.
> It is not. The new Kenwood (TS-590, TS-990 at least), Yaesu (since
> FT-2000) and Elecraft (K2, K3, K3s, etc.) all permit using narrow
> receive filters in DATA mode receive.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 10/27/2017 9:23 AM, Jim W7RY wrote:
> > No... But it is a HINT for radio and software manufactures....
> >
> >
> > I'll have to look at my Kenwood TS-590SG to see if it's the same as the
> > Icom. It's not interfaced with N1MM. It's on my test bench.
> >
> > 73
> > Jim W7RY
> >
> >
> >
> > -----Original Message----- From: David G3YYD
> > Sent: Friday, October 27, 2017 8:15 AM
> > To: rtty@contesting.com
> > Subject: Re: [RTTY] Intel NUC, anyone?
> >
> > Is that a learning moment that says: Don't buy an ICOM?
> >
> > 73 David G3YYD
> >
> > -----Original Message-----
> > From: RTTY [mailto:rtty-bounces@contesting.com] On Behalf Of Jim W7RY
> > Sent: 27 October 2017 13:13
> > To: rtty@contesting.com; Joe Subich, W4TV
> > Subject: Re: [RTTY] Intel NUC, anyone?
> >
> > Agreed Joe!
> >
> > The Icom IC7300 is like this. I wish radio manufactures would allow AFSK
> > when in RTTY mode with a simple menu change.
> >
> >
> > There are ways to clean up an AFSK signal...
> >
> > But then again.... You're selling interfaces!
> >
> > 73
> > Jim W7RY
> >
> >
> > -----Original Message-----
> > From: Joe Subich, W4TV
> > Sent: Thursday, October 26, 2017 5:59 PM
> > To: rtty@contesting.com
> > Subject: Re: [RTTY] Intel NUC, anyone?
> >
> >
> >> Another is that some rigs have transmit filters that are only usable
> >> in FSK mode
> > Actually, that is receive filters. Nearly all of the older Kenwood,
> Icom
> > and Yaesu rigs limited the narrow filter to "RTTY" (FSK) mode
> only. Icom
> > still limits its "twin peak" filter to RTTY only.
> >
> > While many rigs are not as clean on FSK as they can be on AFSK, FSK is a
> > whole lot cleaner than many AFSK signals (particularly those with
> "Windows
> > noises", hum, clipping products from over driving the mic preamp, RFI
> > due to
> > uncorrected common mode RF on the antenna leads, open ground
> connections,
> > audio from open microphones, etc. With FSK it is easier to generate a
> > "passable" signal for those who either do not care or don't know how to
> > generate a clean AFSK signal.
> >
> > 73,
> >
> > ... Joe, W4TV
> >
> >
> > On 10/26/2017 6:21 PM, iain macdonnell - N6ML wrote:
> >> On Thu, Oct 26, 2017 at 12:56 PM, Peter Laws <plaws0@gmail.com> wrote:
> >>> On Thu, Oct 26, 2017 at 2:14 PM, David G3YYD <g3yyd@btinternet.com>
> > wrote:
> >>>
> >>>> from FTDI. But why spend money on a box when you can just use AFSK
> >>>> for a very small sum in making your own sound card to rig lead.
> >>>
> >>>
> >>> Why do some hams use a straight key for CW? A there are any number
> >>> of keyers and interfaces that can produce perfectly timed CW using a
> >>> keyboard for input.
> >>
> >> That's kindof a weak argument. Sending CW with a straight-key is a
> >> skill (some would say an art). There's no special (operating) skill
> >> involved in FSK vs. AFSK.
> >>
> >> The usual argument for FSK is that you don't have to worry about
> >> getting the audio level right, and keeping the audio clean. Another is
> >> that some rigs have transmit filters that are only usable in FSK mode
> >> (IIUC).
> >>
> >> 73,
> >>
> >> ~iain / N6ML
> >> _______________________________________________
> >> RTTY mailing list
> >> RTTY@contesting.com
> >> http://lists.contesting.com/mailman/listinfo/rtty
> >>
> > _______________________________________________
> > RTTY mailing list
> > RTTY@contesting.com
> > http://lists.contesting.com/mailman/listinfo/rtty
> > _______________________________________________
> > RTTY mailing list
> > RTTY@contesting.com
> > http://lists.contesting.com/mailman/listinfo/rtty
> >
> > _______________________________________________
> > RTTY mailing list
> > RTTY@contesting.com
> > http://lists.contesting.com/mailman/listinfo/rtty
> > _______________________________________________
> > RTTY mailing list
> > RTTY@contesting.com
> > http://lists.contesting.com/mailman/listinfo/rtty
> >
> _______________________________________________
> RTTY mailing list
> RTTY@contesting.com
> http://lists.contesting.com/mailman/listinfo/rtty
_______________________________________________
RTTY mailing list
RTTY@contesting.com
http://lists.contesting.com/mailman/listinfo/rtty
|