SSB contesting

[Doug Faunt N6TQS [phone]]

I've finally gotten my K3 on the air for 'phone Sweepstakes.

But that leads to a question that may have been answered already- Is
the audio input hard selected, as it appears, or can multiple inputs
be used, depending on where PTT is asserted?  I'd like for my computer
to act as a DVK feeding the back panel line-in, but have a mike with a
PTT switch in the front panel jack and have that for unexpected,
unprogrammed speech (or if the computer crashes).  Sorta like having a
key plugged in even if using a computer for most CW sending.

73, doug
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[KK7P]

> But that leads to a question that may have been answered already- Is
> the audio input hard selected, as it appears, or can multiple inputs
> be used, depending on where PTT is asserted?

There is one PTT line inside the radio.  Thus, the K3 has no way of
knowing if you pressed a PTT button on your mic, a footswitch, or the
computer pressed it for you via DTR or RTS.  You specify to the K3 which
of three possible sources (front panel mic, rear panel mic, or line) it
should use for Tx audio, and it uses that source.

73,

Lyle KK7P

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[Doug Faunt N6TQS [phone]]

That's what I was afraid of.

Oh well,

73, doug

   Date: Mon, 19 Nov 2007 09:32:14 -0800
   From: Lyle Johnson <[hidden email]>

   > But that leads to a question that may have been answered already- Is
   > the audio input hard selected, as it appears, or can multiple inputs
   > be used, depending on where PTT is asserted?

   There is one PTT line inside the radio.  Thus, the K3 has no way of
   knowing if you pressed a PTT button on your mic, a footswitch, or the
   computer pressed it for you via DTR or RTS.  You specify to the K3 which
   of three possible sources (front panel mic, rear panel mic, or line) it
   should use for Tx audio, and it uses that source.

   73,

   Lyle KK7P

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[wayne burdick]

Doug,

If you're using a computer, the application could potentially send
commands to the K3 to select different TX audio sources in real time.
We're working with software developers and adding new remote control
commands as needed.

73,
Wayne
N6KR


On Nov 19, 2007, at 9:33 AM, Doug Faunt N6TQS [phone] wrote:

>
>> But that leads to a question that may have been answered already- Is
>> the audio input hard selected, as it appears, or can multiple inputs
>> be used, depending on where PTT is asserted?
>
>    There is one PTT line inside the radio.  Thus, the K3 has no way of
>    knowing if you pressed a PTT button on your mic, a footswitch, or
> the
>    computer pressed it for you via DTR or RTS.  You specify to the K3
> which
>    of three possible sources (front panel mic, rear panel mic, or
> line) it
>    should use for Tx audio, and it uses that source.

---

http://www.elecraft.com

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[Leigh L. Klotz Jr WA5ZNU]

Yes, I also recently requested that DATA A mode default to the LINE IN
jack, if there's not a  per-mode default for MIC SEL and GAIN.  The
built-in isolated data interface is great and I unplugged my
TigerTronics SL-1+ and used just two cables for digital modes.  But as
it is, you have to remember to change the MIC SEL setting and readjust
the MIC GAIN when you switch from SSB to PSK.

Odd that you mention the speech issue; just a couple of days ago I heard
someone in an SSB contest (before SS) on 14.070, probably a similar type
of wiring error.

Leigh/WA5ZNU

Doug Faunt N6TQS [phone] wrote:

> I've finally gotten my K3 on the air for 'phone Sweepstakes.
>
> But that leads to a question that may have been answered already- Is
> the audio input hard selected, as it appears, or can multiple inputs
> be used, depending on where PTT is asserted?  I'd like for my computer
> to act as a DVK feeding the back panel line-in, but have a mike with a
> PTT switch in the front panel jack and have that for unexpected,
> unprogrammed speech (or if the computer crashes).  Sorta like having a
> key plugged in even if using a computer for most CW sending.
>
> 73, doug
> _______________________________________________
> Elecraft mailing list
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> You must be a subscriber to post to the list.
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>
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>  

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[Doug Faunt N6TQS [phone]]

   From: wayne burdick <[hidden email]>
   Date: Mon, 19 Nov 2007 09:42:12 -0800

   Doug,

   If you're using a computer, the application could potentially send
   commands to the K3 to select different TX audio sources in real time.
   We're working with software developers and adding new remote control
   commands as needed.

I thought of that- that's why I mentioned "if the computer crashes" as
one of the situations where the mike would be useful.  And I could, I
suspect, put a "switch mikes" command on one of the PF buttons.

But was hoping, that since there is internal audio switching, that
could be tied somehow to an external, non-computer generated, signal.

It'd also be useful for SSTV (talk about minority mode!!) without
requiring software changes (I'll have to look and see if MMSSTV could
do the computer commands necessary, as is- it might).

73, doug


   On Nov 19, 2007, at 9:33 AM, Doug Faunt N6TQS [phone] wrote:

   >
   >> But that leads to a question that may have been answered already- Is
   >> the audio input hard selected, as it appears, or can multiple inputs
   >> be used, depending on where PTT is asserted?
   >
   >    There is one PTT line inside the radio.  Thus, the K3 has no way of
   >    knowing if you pressed a PTT button on your mic, a footswitch, or
   > the
   >    computer pressed it for you via DTR or RTS.  You specify to the K3
   > which
   >    of three possible sources (front panel mic, rear panel mic, or
   > line) it
   >    should use for Tx audio, and it uses that source.

   ---

   http://www.elecraft.com

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[KK7P]

Hello Leigh!

> ...  But as
> it is, you have to remember to change the MIC SEL setting and readjust
> the MIC GAIN when you switch from SSB to PSK.

The LINE IN Gain and MIC Gain are separately maintained values, even
though they use the same control, so when you switch from MIC to LINE
the last-used gain is in effect.  Thus, you should not have to re-adjust
MIC or LINE gain as you switch between those transmit audio source
selections.

73,

Lyle KK7P

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[Leigh L. Klotz Jr WA5ZNU]

Thank you Lyle!  So 50% of my problem is already solved!  I can see you
have many requests in this area and will be patient for you to work out
what the right thing to do is.
73,
Leigh/WA5ZNU

> Hello Leigh!
>
>> ...  But as
>> it is, you have to remember to change the MIC SEL setting and
>> readjust the MIC GAIN when you switch from SSB to PSK.
>
> The LINE IN Gain and MIC Gain are separately maintained values, even
> though they use the same control, so when you switch from MIC to LINE
> the last-used gain is in effect.  Thus, you should not have to
> re-adjust MIC or LINE gain as you switch between those transmit audio
> source selections.
>
> 73,
>
> Lyle KK7P
>

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[Doug Faunt N6TQS [phone]]

   Date: Mon, 19 Nov 2007 09:54:31 -0800
   From: "Leigh L. Klotz, Jr." <[hidden email]>

   Yes, I also recently requested that DATA A mode default to the LINE IN
   jack, if there's not a  per-mode default for MIC SEL and GAIN.  The
   built-in isolated data interface is great and I unplugged my
   TigerTronics SL-1+ and used just two cables for digital modes.  But as
   it is, you have to remember to change the MIC SEL setting and readjust
   the MIC GAIN when you switch from SSB to PSK.

Hm, I'd not thought about changing the mike level.  I'd expect to set
the mike level for the mike, and then adjust the computer output
level, but that might be a problem.  It'd be useful to have separate
mike levels for each input, wouldn't it?

I'm normally a digital-modes only op, so it wasn't until I got into
'phone SS (with a cough) that I'd really thought about the issue.

73, doug


   Odd that you mention the speech issue; just a couple of days ago I heard
   someone in an SSB contest (before SS) on 14.070, probably a similar type
   of wiring error.

   Leigh/WA5ZNU

   Doug Faunt N6TQS [phone] wrote:
   > I've finally gotten my K3 on the air for 'phone Sweepstakes.
   >
   > But that leads to a question that may have been answered already- Is
   > the audio input hard selected, as it appears, or can multiple inputs
   > be used, depending on where PTT is asserted?  I'd like for my computer
   > to act as a DVK feeding the back panel line-in, but have a mike with a
   > PTT switch in the front panel jack and have that for unexpected,
   > unprogrammed speech (or if the computer crashes).  Sorta like having a
   > key plugged in even if using a computer for most CW sending.
   >
   > 73, doug
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   > Elecraft mailing list
   > Post to: [hidden email]
   > You must be a subscriber to post to the list.
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   > Elecraft web page: http://www.elecraft.com
   >  

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[dj7mgq]

Hallo Lyle,

> You specify to the K3 which of three possible sources ...

It could however make sense, if possible to allow multi audio input.

An example would be an external DVK (e.g. Laptop) hooked up to line in
and the microphone connected to one of the microphone inputs.

One could be tricky and allow the DSP choose which input to use:

        Is the input from the microphone higher than
        the VOX threshold then use the microphone signal,

        otherwise use the line in audio, if it is exceeding
        the  VOX threshold.

Or something like that...

vy 73 de toby
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[Doug Faunt N6TQS [phone]]

Bzzt, I think it'd be better if this were implemented with the Line In
having priority.  The computer knows how to be quiet better than my
scratchy throat does.

73, doug

   Date: Tue, 20 Nov 2007 00:08:06 +0100
   From: Toby Deinhardt <[hidden email]>

   Hallo Lyle,

   > You specify to the K3 which of three possible sources ...

   It could however make sense, if possible to allow multi audio input.

   An example would be an external DVK (e.g. Laptop) hooked up to line in
   and the microphone connected to one of the microphone inputs.

   One could be tricky and allow the DSP choose which input to use:

           Is the input from the microphone higher than
           the VOX threshold then use the microphone signal,

           otherwise use the line in audio, if it is exceeding
           the  VOX threshold.

   Or something like that...
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