Dick,
i will print this information for future reference. i have never
operated RTTY, only CW and occasional PSK31. should i wish to move that
direction i will surely look carefully at the RigBlaster boxes.
thank you,
jack
On Sun, 2009-04-19 at 08:23 -0600, Dick Williams wrote:
> Jack,
>
> If you are going to operate RTTY, I would highly suggest you "connect" the
> red and black cables and forget about the soundcard for AFSK. The O2 is
> much better suited for FSK RTTY; and in fact when you select FSK for the
> mode it switches in the right filters for RTTY.
>
> Additionally you don't have to worry about audio levels, overdrive, and a
> whole "s--tload of other problems associated with trying to use AFSK.
>
> There are several interfaces on the market that work very well for
> interfacing the radio with the computer and save you the "headaches" of
> connecting the radio directly to the computer (you really should use
> isolation transformers - especially on the line sending audio from the sound
> card to your radio).
>
> Ones that I have tried include the RigBlaster, Rig Expert Standard and in
> the near future the Naviagtor; I believe MFJ also has one too. All work
> very well with FSK and as far as I know, with all digital modes). Although
> I learned many years ago NEVER say "all"; there always seems to be some
> exception.
>
> The advantages of the Rig Expert and Navigator are they both have built in
> sound cards, you only run one cable (USB) to your computer, both have
> cables that are taylor made for your radio and plug directly into the Aux
> din plug (plug and play - forget about the breakout cable that came with the
> O2), and you don't tie up your sound card with the radio. There are some
> others too, but the aforementioned are the main ones.
>
> If you like to homebrew, it is very easy to make a FSK keying circuit (and
> a PTT circuit) using a general purpose NPN transistor and a 1k resistor.
> You hook the FSK line to the colector, the emmiter is grounded, and you "FSK
> key" the transistor base from pin3 of a serial port you assign for FSK (for
> PTT you use the same circuit and pin 7 on the DB-9 com port).
>
> I think you will find that most really serious RTTY enthusists use FSK if at
> all possible.
>
> My two cents worth.
>
> Dick K8ZTT
>
> PS A couple of excellent programs (both free) that I have tried for digital
> are MMTTY for RTTY and Hamscope for PSK31 and RTTY (uses the MMTTY engine).
> I doubt if you can find one guy that will "bad mouth" either; and that is
> not to say that other excellent programs don't exist, there most certainly
> are, but I have not tried them.
>
> ----- Original Message -----
> From: "Stephen Cannon" <sugar_bears_home@yahoo.com>
> To: "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>
> Sent: Sunday, April 19, 2009 6:26 AM
> Subject: Re: [TenTec] Aux I/O connection
>
>
> > Jack,
> > Are the other two cables from the Orion II Aux I/O port plug (the red and
> > black cables) supposed to be connected?
> >
> >
> > Stephen
> >
> > -----Original Message-----
> >
> > John, if you look at your manual and the I/O cable that comes with the
> > Orion, you will note that cable has red, white, black and yellow ends.
> > all are phono plugs.
> > get a 1/8" adapter for each to plug into the sound card on your
> > computer.
> > white from the Orion goes to BLUE on your sound card.
> > yellow from the Orion goes to PINK on your sound card.
> >
> > use stereo plugs for the sound card.
> >
> > jack ak7o
> >
> >
> > the white from your I/O (from the Orion) goes to the On Sat, 2009-04-18
> > at 20:48 -0400, John B. Egger wrote:
> >> I'm hoping to get started on digital modes (other than CW, that is) but
> >> face a problem right at the start. My computer has "Speaker out" (used
> >> for its speakers), "Line In," and "Mic In" jacks (all 1/8" stereo). The
> >> auxiliary cable's white phono plug is for "Line In", but I have no "line
> >> out" on my computer. Does it go (through a phono-to-stereo-plug adapter)
> >> to the computer's "Line In" jack?
> >>
> >> Obviously I'm on the ground floor with this. Other connections, and
> >> software (I have Fldigi, Xlog, and Twpsk) issues will come later.
> >>
> >
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> >
> >
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