[ICOM] Wave Files not keying IC746 VOX

[Mike]

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
>> ----
>> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
>> Icom Users Net: Sundays, 1700Z, 14.316 MHz
>> Icom FAQ: http://www.qsl.net/icom/
>> To support QSL/QTH.net: http://www.qsl.net/donate.html
>>
>>
> ----
> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
> Icom Users Net: Sundays, 1700Z, 14.316 MHz
> Icom FAQ: http://www.qsl.net/icom/
> To support QSL/QTH.net: http://www.qsl.net/donate.html
>