The frequency shift of RTTY signals is usually 170 Hz. So, in order to
decode both the mark and space tones and to allow for keying sidebands, you
should use a bandwidth of 250, 300 Hz or a little greater.
Lloyd Rasmussen, Kensington, MD
http://lras.home.sprynet.com
-----Original Message-----
From: Matthew Chao
Sent: Saturday, July 18, 2015 4:24 PM
To: [log in to unmask]
Subject: Re: Digital Modes
Hi, Steve. Believe am getting text off the radio, though probably
corrupted. I have a CW filter that will go down to 50 hertz, but
probably too much for RTTY.
When I hit F9, I hear tones, but receiver not muted. Is there a
function key that will strictly get me to the RX window? Thanks.--Matt,
N1IBB.
At 12:33 PM 7/18/2015 -0400, you wrote:
>Matt,
>
>Sounds like you are making progress.. There may be RTTY software that
>does some kind of auto tune thing,but I'm not aware of it
>
>The software has several kinds of visual tuning aids, but not usable by
>a screen reader. One of them shows the received signal as a peak
>on a graph, and you would tune until the top of the peak lines up with a
> line. Not very useful
>
>I just tune by sound and slowly tune across the signal until JAWS
>starts to speak. You will get to develop an ear for it. The
>narrower you can get your filters, the easier it is to tune this way.
>
>The Vox is located in the Signal Link. It is controled by the knob on
>the right. Maybe set it full ccw and see what happens. There is a
>data vox in the 480, but I don't think you need it. Menu 60 selects
>between mic and data for vox, but (scratching my head) I don't think
>you need it with the vox in the SL, but you can try turning it on for
>data in menu 60.
>
>When you press f9, do you hear anything at all? Does the receiver on
>the radio mute when you press f9?
>
>
>73, Steve KW3A
>
>On 7/18/2015 12:07 PM, Matthew Chao wrote:
> > Hi, Folks. Making progress. Read the test message I played; forgot
> > what keystrokes I used, semi-educated guesses. Got out of the main
> > screen and told WE to "speak all". Also, got on 20 meters, listened
> > for RTTY, AND WAS ABLE VIA PITCH TO TUNE IN. At 09:5Is there an
> > easier way to do this? Kept "speak all" on. Got some garbled
> > characters, but seemed to get some callsigns that made sense.
> >
> > Regarding transmitting, do I need to turn vox on? And how do I set
> > vox sensitivity? Thanks.--Matt, N1IBB.
> >
> > 8 AM 7/18/2015 -0400, you wrote:
> >> Dave,
> >>
> >> Good luck in your adventure. After speaking with Jim KE5AL last
> >> night
> >> following the echolink net, looks like he has gotten things working.
> >>
> >> Perhaps if more of us get our fingers into this stuff, there will be
> >> more tips, tricks, and work arounds to be shared with the multitude.
> >>
> >> 73, Steve KW3A
> >>
> >>
> >>
> >> On 7/18/2015 9:41 AM, Dave Basden wrote:
> >>> Hi Steve,
> >>>
> >>> Please don't take the discussion off list--I'm following along with
> >>> the same questions as Matt has.
> >>>
> >>> 73,
> >>>
> >>> Dave, W7OQ
> >>>
> >>> At 05:22 AM 7/18/2015, you wrote:
> >>>> Yes that is the power button. Push it in. It draws power from the
> >>>> USB
> >>>> connection, so no other power source needed.
> >>>>
> >>>> OK, the wav file played. Now you know what RTTY sounds like. It's
> >>>> just
> >>>> a test message. As it plays, the text should display in the
> >>>> receive
> >>>> window of the program. Now you need to make your software read
> >>>> that
> >>>> text out to you.
> >>>>
> >>>> I know you use WE. I use JAWS. In JAWS, there a few options that
> >>>> may
> >>>> have some equivalent in WE. Set so that screen text is echoed,
> >>>> use
> >>>> various cursors to read the text in the window, or set a frame
> >>>> around
> >>>> the rx window to speak received text with a hot key combo.
> >>>>
> >>>> Are you connected to the radio yet?
> >>>>
> >>>> We are starting to get down to some nuts and bolts stuff, feel free
> >>>> to
> >>>> continue this off list if you want.
> >>>>
> >>>> (my call)@snip.net
> >>>>
> >>>> 73, Steve KW3A
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> On 7/18/2015 7:59 AM, Matthew Chao wrote:
> >>>>> Hi, Steve. Connected the SignalLink to the PC and followed the
> >>>>> instructions on the miniCD that came with the unit. Went into
> >>>>> MMTTY,
> >>>>> tried to "play" one of the files, and got nothing but the sound of
> >>>>> RTTY over my PC's speakers. HMMMM. Also, assume the button on
> >>>>> lower
> >>>>> left is the power switch for the board? Thanks.--Matt, N1IBB.
> >>>>>
> >>>>> At 05:51 PM 7/17/2015 -0400, you wrote:
> >>>>>> Nice to have a friend. I may get one one of these days.
> >>>>>>
> >>>>>> Really doesn't matter which way is up I guess. Mine
> doesn't have
> >>>>>> any sort of tag, but I always used it with the button on the
> left side.
> >>>>>> They recommend setting knobs at mid point for
> starters. If the
> >>>>>> button is on the left, the knobs all point at 12 o'clock when at
> >>>>>> mid
> >>>>>> point. At least on mine, the knobs and their pointers seem more
> >>>>>> intuitive with the button to the left. .
> >>>>>>
> >>>>>> With the jumper installed, you should probably connect to the pc
> >>>>>> and
> >>>>>> see if anything blows up.
> >>>>>>
> >>>>>> 73, Steve KW3A
> >>>>>> On 7/17/2015 5:24 PM, Matthew Chao wrote:
> >>>>>>> Hey, Steve. The jumper block's already installed; a friend at HRO
> >>>>>>> whom I've known for years did it for me, bless him.
> >>>>>>>
> >>>>>>> So, which is right-side up: the side with the tag, or the side
> >>>>>>> without?--Matt, N1IBB.
> >>>>>>>
> >>>>>>> At 05:04 PM 7/17/2015 -0400, you wrote:
> >>>>>>>> Matt,
> >>>>>>>>
> >>>>>>>> The extra audio cable isn't needed. It's only for use if
> your radio
> >>>>>>>> doesn't have another way of getting audio to the unit.
> >>>>>>>>
> >>>>>>>> Be sure you are holding it right side up. Just from
> >> memory, I thought
> >>>>>>>> the push button was in the lower left corner and not the
> upper right
> >>>>>>>> corner.
> >>>>>>>>
> >>>>>>>> you will need to install the jumper block on the header
> >>>> before you do
> >>>>>>>> anything else.
> >>>>>>>>
> >>>>>>>> 73, Steve KW3A
> >>>>>>>>
> >>>>>>>> On 7/17/2015 4:40 PM, Matthew Chao wrote:
> >>>>>>>>> Hey, Steve. the toy has arrived. It's a Signal USB 6PM. It
> >>>>>>>>> came
> >>>>>>>>> with three cables: a USB, A DIN TO RJ45 cable, and a 3.5mm
> >>>>>>>>> patch
> >>>>>>>>> cord. The rear panel has the two connectors, plus a few female
> >>>>>>>>> connections. The front panel has a pushbutton in the upper
> >>>>>>>>> righthand corner, and three knobs in a row with
> pointers. Understand
> >>>>>>>>> where the two thicker cables go, but what about the patch cord?
> >>>>>>>>> Also, are the installation instructions on the CD? Would
> like to do
> >>>>>>>>> as much of the install as possible, as my YL is technically
> >>>>>>>>> challlenged, hi, hi. Thanks in advance.--Matt, N1IBB.
> >>>>>>>>>
> >>>>>>>>> At 10:13 AM 7/17/2015 -0400, you wrote:
> >>>>>>>>>> OK Matt,
> >>>>>>>>>>
> >>>>>>>>>> Since you don't have enough to read, be sure to read about the
> >>>>>>>>>> data mode selection of the 480 and how to set the DSP
> >>>>>>>>>> filtering
> >>>>>>>>>> for data mode. There is similar filtering in the 590, but I
> >>>>>>>>>> don't do it this way so I'm not familiar with it's use.
> >>>>>>>>>>
> >>>>>>>>>> You would want to toggle your mode selection until you hear "L
> >>>>>>>>>> D"
> >>>>>>>>>> meaning lsb data. Menu 45 toggles data filtering on and off,
> >>>>>>>>>> but
> >>>>>>>>>> you will have to read up on this to figure it all out.
> >>>>>>>>>>
> >>>>>>>>>> 73, Steve KW3A
> >>>>>>>>>>
> >>>>>>>>>>
> >>>>>>>>>> On 7/17/2015 9:32 AM, Matthew Chao wrote:
> >>>>>>>>>>> Hi, Steve. Thanks much. The main page is a bit daunting,
> >>>>>>>>>>> indeed. However, I will follow your suggestion and review
> >>>>>>>>>>> these
> >>>>>>>>>>> articles. The new toy is scheduled to arrive sometime
> >>>>>>>>>>> today.--Matt, N1IBB.
> >>>>>>>>>>>
> >>>>>>>>>>> At 08:13 AM 7/17/2015 -0400, you wrote:
> >>>>>>>>>>>> Matt,
> >>>>>>>>>>>>
> >>>>>>>>>>>> A couple of days ago you said you couldn't make anything out
> >>>>>>>>>>>> of
> >>>>>>>>>>>> the hamradioandvision.com site I had suggested. Since
> >>>>>>>>>>>> MMTTY
> >>>>>>>>>>>> is one of the programs you seem interested in, I've cherry
> >>>>>>>>>>>> picked 2 articles on that software from the site:
> >>>>>>>>>>>>
> >>>>>>>>>>>>
> >>>>>>>>>>>> http://www.hamradioandvision.com/mmtty-accessibility-vision/
> >>>>>>>>>>>>
> >>>>>>>>>>>> http://www.hamradioandvision.com/mmtty-text-to-speech/
> >>>>>>>>>>>>
> >>>>>>>>>>>>
> >>>>>>>>>>>> I'm not sure there is anything particular to Digipan on the
> >>>>>>>>>>>> site, but maybe if you dig deep enough you will find
> >>>>>>>>>>>> something.
> >>>>>>>>>>>> There is a lot of good info on the site for blind hams, but
> >>>>>>>>>>>> I
> >>>>>>>>>>>> think the main page can be confusing. You will also find
> >>>>>>>>>>>> references to software that will give options other than
> >>>>>>>>>>>> MMTTY and Digipan.
> >>>>>>>>>>>>
> >>>>>>>>>>>> Once you get your feet wet, go back to the site and poke
> >>>>>>>>>>>> around. Things that seem odd today may make sense later on.
> >>>>>>>>>>>>
> >>>>>>>>>>>> 73, Steve KW3A
> >>>>>>>>>>>
> >>>>>>>>>>>
> >>>>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>
> >>>
> >>>
> >
> >
> >
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