[ICOM] Wave Files not keying IC746 VOX

[Mike]

Hello Vlad and others,

Got it working.  My error was having two com ports set up - one for the
radio freq., mode, etc and the other for digital (FSK).  On the second com
port had DTR=AlwaysOff.  Changed the second com port to DTR=PTT and now the
radio PTT is turned on/off by the computer.

Now to take a screen shot of the "Configurer" screen for future reference.

Thanks for all the help from everyone.  It is appreciated.

  73,
  Mike, K4GMH

On Thu, Jan 21, 2016 at 9:31 AM, V Sidarau <vs.lists at gmail.com> wrote:

> Mike,
>
> VOX does not key the rig via the ACC input for sure. You must involve
> forced
> PTT somehow.
>
> N1MM (N1MM+) does provide PTT toggling, both as a radio command via CI-V
> and
> a hardware one. I used to use the radio command with a ProIII and it worked
> just fine. However my main TRX is IC-775DSP which does not provide PTT by
> radio command. So I bought a PC extension card which gave me 2 more COM
> ports + 1 LPT, and now I have plenty of ports to play with. The PTT is now
> a
> hardware one, just the simple usual 1 transistor keying circuit.
>
> My set-up works just fine for both Phone and RTTY messages provided via the
> ACC audio input. It works for all, N1MM+, MixWin and Writelog, though at
> this stage I use N1MM+ exclusively.
>
> If you have all the pre-recorded messages ready along with PTT hardware
> which works with other programs, you just have to play with N1MM+ settings.
> Make sure:
> - COM port settings are correct according to N1MM+ instructions
> - in N1MM+ you initiate a log for a SSB or RTTY contest prior to start
> experimenting
> - you use proper F-key messages
> - you use proper paths to audio files
> - double check if no other program is launched before N1MM+. If MixWin was
> turned on before N1MM+, it may grab the COM port for own use and block
> access to the same port from other programs.
>
> You may also check the N1MM+ documentation, especially
>
> http://n1mm.hamdocs.com/tiki-index.php?page=Serial+Parallel+and+Sound+Card+I
> nterfacing&structure=N1MM+Logger+Documentation .
>
> Hope it helps.
>
> 73,
>
> Vlad VE3IAE
>
> --
>
>
>
>
> -----Original Message-----
> From: Icom [mailto:icom-bounces at mailman.qth.net] On Behalf Of Mike
> Sent: Wednesday, January 20, 2016 11:29 PM
> To: ICOM Reflector
> Subject: Re: [ICOM] Wave Files not keying IC746 VOX
>
> Hello,
>
> Thanks for all the help to get a wave file to play through the IC746
> without
> having to manually use the PTT on the IC746.  So far all I'm starting to
> agree, audio input to the radio via the accessory socket doesn't go thru
> the
> VOX circuit.
>
> A CQ wave file can be used through the accessory socket, pin 4, and drive
> the radio to full output.  However, have to press the "TRANSMIT" button
> (PTT) on the front of the IC746 to get the radio to use the CQ wave file.
> Wondering if N1MM+ provides a PTT when a wave file is triggered by a
> function key?
>
> If N1MM+ does generate a PTT command, have not been able to get it to the
> radio.  Tried different N1MM+ Config, Hardware com port combinations
> without
> any success.
>
> Do have the Icom Service Manual and Instruction Manual for the radio, but
> haven't been able to definitely figure out if the accessory socket audio
> input goes into the VOX circuit.  Very convoluted schematic.
>
> Not much information in either Manual regarding the VOX.   All the VOX info
> refers to the audio from the microphone.  The only thing found in the
> Manuals about the accessory socket audio input is the Input Impedance of 10
> KOhms and Input Level of Approx. 100 mVolts rms.
>
> Again, the wave audio input to the accessory socket pin 4 drives the radio
> to full output when the PTT is manually actuated when the wave audio is
> sent
> from the computer.  One other input is the audio into pin 4 on the
> accessory
> socket from another program, MixW2, for BPSK31 works fine, but
> MixW2 does provide a PTT connection when the BPSK31 audio is provided by
> the
> computer.
>
> The wave files have been successfully used in the past with Writelog.  I'm
> not sure if Writelog provides a PTT command when a wave file is activated
> though.
>
>   73,
>   Mike, K4GMH
>
> On Wed, Jan 20, 2016 at 12:12 PM, Tony Hwang <dragon40 at shaw.ca> wrote:
>
> > I think the computer output should be at line level to trigger the VOX.
> > Tried to play music on the air?  Is it allowed?
> > 73,
> > Tony, VE6CGX
> >
> > Mike wrote:
> >
> >> Trying to get my IC746 to transmit using the VOX when a Wave file is
> >> played from the computer.  The 746 does work when the "TRANSMIT"
> >> button on the front panel is engaged and the function key is pressed.
> >> Then the Wave file will drive the radio to full output and sounds
> >> good when listening using the built in monitor on the 746.  Also, VOX
> >> works without pushing the "TRANSMIT" button using a microphone.
> >>
> >> The wave file comes from the computer into the 746 via ACC1, pin 4.
> >>
> >> N1MM+ is the contest S/W being used.
> >>
> >>    73,
> >>    Mike, K4GMH
> >> ----
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