Re: [RTTY] Intel NUC, anyone?

[Jay <ws7ik7tj@gmail.com>]

As do Mountain West Radio Rigblaster Advantages.

On 10/27/2017 7:47 AM,
> > But then again.... You're selling interfaces!
>
> True.  However, the interfaces support *both* AFSK and FSK.
> If the user follows the instructions to use the transceiver
> mode that disables the microphone (or disconnects it with
> certain older Yaesu and Icom transceivers) and sets the
> audio level correctly, they will be able to make "clean"
> AFSK as long as their station does not have a common mode
> RF issue.  On the other hand, if the user can't set up
> his station for clean AFSK, he can still use FSK!
>
> 73,
>
>    ... Joe, W4TV
>
>
> On 10/27/2017 9:13 AM, Jim W7RY wrote:
> > 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
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