Interesting! My plugs on both input and output are mono, not stereo. I'll
have to scrounge around in the junk box and find some stereo ones and give
that a go. Thanks for the heads up.
Gary AL9A
----- Original Message -----
From: "David Hachadorian" <k6ll@adelphia.net>
To: <writelog@contesting.com>
Sent: February 28, 2006 5:27 PM
Subject: Re: [WriteLog] MMTTY plug in problem
> Here's something to check. The mic input jack is a monaural
> input, but it requires a stereo plug, with audio on the tip,
> and shield on the shell. There should be no connection to
> the ring. There is a dc voltage on the ring that is used to
> power electret mics, such as the usual computer mics. You
> cannot connect a mono plug to the mic in jack. The plug has
> to be a stereo plug, even though the ring is not used.
>
> Dave Hachadorian, K6LL
> Yuma, AZ
>
>
>
> ----- Original Message -----
> From: "Gary Senesac AL9A" <al9a@pobox.mtaonline.net>
> To: "Writelog Reflector" <writelog@contesting.com>
> Sent: Tuesday, February 28, 2006 10:38 PM
> Subject: Re: [WriteLog] MMTTY plug in problem
>
>
> > Charlie,
> > Computer is a Compaq Presario laptop running WinME. I
> > seriously doubt the
> > problem is the sound card driver, as the card works fb on
> > PSK31, CW, and
> > SSB. It also works without a problem on the MMTTY stand
> > alone software. It
> > is only when running the MMTTY plug in with WL that the
> > card apparently gets
> > overloaded and desensed.
> >
> > I've played with it a bit more today, with no success. I
> > feed the receive
> > audio to the MIC IN of the soundcard from the fix audio
> > output pin on the
> > ACC1 jack on the back of my IC-756PRO. Because this is
> > generally too much
> > audio for the card I first route it to a Radio Shack
> > stereo mixer where I
> > can use a slider control to adjust the output going to the
> > soundcard. When
> > testing the differences between MMTTY stand alone and
> > MMTTY plug in I notice
> > that the MMTTY stand alone will take significantly more
> > audio input from the
> > mixer than MMTTY plug in will before the Overflow
> > indicator comes on.
> > Again, no clue why that would be.
> >
> > After transmitting with MMTTY plug in for WL, the spectrum
> > display
> > continuously displays Overload, the tuning indicator is
> > just a blob of white
> > dots and the audio wave indicator remains relatively flat
> > never showing the
> > mark and space peaks for tuning. I suspect RFI of some
> > sort, but darned if
> > I can understand why one program is immune and the other
> > goosey! I tried
> > putting more turns on the torrid core on the input line to
> > the soundcard
> > ,but it didn't make any difference. I will have to
> > scrounge up more torrids
> > and ferrite bars out of the junk box and trying adding
> > more chokes on the
> > audio out to the radio too I guess. I know AA5AU's
> > tutorial mentions RFI
> > problems on RTTY so I suspect this is going to take some
> > time to correct
> >
> > Now to get ready for the SSB test this weekend. Hopefully
> > there won't be a
> > problem with that now too! Murphy lives!
> > Gary AL9A
> >
> > ----- Original Message -----
> > From: "Charles Morrison" <cfmorris@bellsouth.net>
> > To: <al9a@pobox.mtaonline.net>
> > Sent: February 26, 2006 8:33 AM
> > Subject: RE: MTTY plug in problem
> >
> >
> >>
> >> Gary,
> >>
> >> What type of computer are you using? Is this a homebrew
> >> or "built" one,
> > or
> >> is this a store bought box like Dell or Gateway? The
> >> important thing is
> > the
> >> soundcard.. Is it stock or is it an addon? The reason I
> >> ask is because I
> >> fought similar problems with my "built" computer using an
> >> OEM soundcard
> > that
> >> I bought on Ebay. There were no drivers for it, and
> >> although for playing
> >> windows sounds and such, generic Microsoft Drivers
> >> worked, I found that
> >> there were strange problems when I hooked the radio to
> >> it. Investigation
> >> with the serial number turned up several possibilities,
> >> but the FCC id
> > gave
> >> me the manufacturer (Creative) which wasn't stamped on
> >> the card.
> >>
> >> >From there, futher digging on the Creative site found me
> >> >the correct
> > driver,
> >> which I used to replace the Microsoft driver and things
> >> worked fine. With
> >> the MS Driver I found:
> >>
> >> 1. Audio input was present regardless of if I used the
> >> Line In or the Mic
> >> In, and chose either one in the audio panel. IE: I could
> >> plug the radio
> >> into Line In, and in the sound panel on the computer
> >> choose Mic but I
> > still
> >> had audio.
> >> 2. There was a weird "residual" noise, whereby I had
> >> audio showing up
> > even
> >> if the rig was turned off, NOISE!
> >> 3. Level settings didn't seem to work correctly. I
> >> could turn the inputs
> >> all the way down and still have audio present in MMTTY.
> >> This is what
> > really
> >> blew my mind.
> >>
> >> Changing the driver fixed this permanently. Now, if Im
> >> plugged into the
> >> Line In and select Mic, the waterfall and such in MMTTY
> >> goes to a "dot",
> > no
> >> audio present. The inputs work correctly as well.
> >>
> >> I dug around on Google with the Model number printed on
> >> the card, used the
> >> FCC website to ID the card definitely by its FCC ID, and
> >> then found the
> >> correct drivers on Creative's site.
> >>
> >> Charlie
> >> KI5XP
> >>
> >>
> >>
> >> > Message: 3
> >> > Date: Sat, 25 Feb 2006 13:06:23 -0900
> >> > From: "Gary Senesac AL9A" <al9a@pobox.mtaonline.net>
> >> > Subject: [WriteLog] MTTY plug in problem
> >> > To: "Writelog Reflector" <writelog@contesting.com>
> >> > Message-ID: <003f01c63a57$b765b6a0$6401a8c0@presario>
> >> > Content-Type: text/plain; charset="iso-8859-1"
> >> >
> >> > Way too late to get started on this, but I've been
> >> > trying to
> >> > run the NA QSO Party RTTY edition using the MMTTY plug
> >> > for
> >> > WL. At first my problem was no receive in MTTY. The
> >> > band
> >> > scope remained unchanged no matter where I tuned, the
> >> > waterfall didn't work and the tuning indicator also
> >> > wouldn't work.
> >> > Fiddled around a bit and tried changing the sound card
> >> > buttons from Mono to Left to Right. Finally got the
> >> > sound
> >> > card to wake up and got receive going.
> >> > However, whenever I transmit, 100W, and go back to
> >> > receive
> >> > the I'm back to no receive! Clicking on the sound
> >> > board
> >> > buttons again restores it.
> >> > Transmit and it dies!
> >> >
> >> > My first suspicion was RF getting back into the sound
> >> > card,
> >> > but I already have a big torrid choke on the line in
> >> > and RF
> >> > feed back is not a problem on either CW or SSB. I shut
> >> > down
> >> > WL and fired up MMTTY stand alone. Receives and
> >> > transmits
> >> > just fine. No problem switching back from transmit to
> >> > receive. Why would the stand alone work OK and the
> >> > plug in
> >> > be a brick???
> >> > Same hook up for both so I'm thoroughly stumped. Any
> >> > suggestions gratefully accepted.
> >> > Gary AL9A
> >> >
> >> >
> >> >
> >>
> >
> > _______________________________________________
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> > WriteLog@contesting.com
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>
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