[Elecraft] K3S SSB TX monitor

[Walter Underwood]

Hmm. Might need an external volume control. I used this setup to boost the audio output and drive speakers with my KX3, but it might work with the K3. The K3 is capable of much higher audio output, but if you tap off the headphone audio, this will probably work.

This uses a 12V audio amp (stereo, 15W per channel) with a volume control. The price seems to range from $8 to $12, but it is affordable regardless.

https://observer.wunderwood.org/2017/03/04/speakers-for-my-elecraft-kx3/ <https://observer.wunderwood.org/2017/03/04/speakers-for-my-elecraft-kx3/>

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Apr 6, 2017, at 4:39 PM, Joe Subich, W4TV <lists at subich.com> wrote:
> 
> 
>> To prevent monitor audio from the microphone from reaching the
>> speaker, while keeping it going to the headphones, and to do this
>> without operator intervention, seems a simple enough requirement.
> 
> If you do not want speaker audio when using headphones set
> CONFIG:SPRK+PH = OFF *AS DOCUMENTED IN THE OWNERS MANUAL!*.
> 
> The K3 DSP has *one output* that feeds both the headphone amplifier
> and the speaker amplifier.  There is no hardware to permit different
> audio feeds to the headphone and speakers.
> 
> 73,
> 
>   ... Joe, W4TV
> 
> 
> On 4/6/2017 6:08 PM, Richard Lamont wrote:
>> Barry,
>> 
>> Thank you. You've confirmed what I suspected: that the desired
>> functionality doesn't exist.
>> 
>> To prevent monitor audio from the microphone from reaching the speaker,
>> while keeping it going to the headphones, and to do this without
>> operator intervention, seems a simple enough requirement.
>> 
>> Having to fiddle with the monitor level after plugging or unplugging
>> headphones is a right pain. What I'm asking for seems such a no-brainer
>> I can't believe it isn't standard. Why on earth would anyone want their
>> live microphone audio routed to the speaker? It's a transceiver, not a
>> public address system.
>> 
>> 73,
>> Richard G4DYA
>> 
>> On 06/04/17 22:30, Barry Simpson wrote:
>>> Richard
>>> 
>>> I do not believe that the K3 can do what you want. The monitor is either
>>> on or off independently of whether you are listening through the speaker
>>> or headphones.
>>> 
>>> If you mainly listen through the speaker, just turn the monitor to zero
>>> and them turn it up when you wear headphones.
>>> 
>>> I think that is the only way.
>>> 
>>> 73
>>> 
>>> Barry  VK2BJ
>>> 
>>> On 7 April 2017 at 06:53, Richard Lamont <richard at lamont.me.uk
>>> <mailto:richard at lamont.me.uk>> wrote:
>>> 
>>>    My previous post might not have made it clear what I'm trying to achieve
>>>    with the K3S.
>>> 
>>>    For RX audio, I usually listen on speakers. These mute when I plug the
>>>    headphones in. That's standard and obvious and just what I want.
>>> 
>>>    When I'm using a voice mode with a microphone, I need the TX monitor
>>>    audio to appear in the headphones and NOT the speakers.
>>> 
>>>    I need this to happen automatically, every time I plug in or unplug the
>>>    headphones, without having to do anything else.
>>> 
>>>    Is there any way of configuring the rig to do precisely this?
>>> 
>>>    73,
>>>    Richard G4DYA
>>> 
>>> 
>>> 
>>> 
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>> 
>> 
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