K2 audio output question

[Chuck Chandler]

I've recently begun volunteering aboard the museum ship USS Slater, where
they have a K2 in Radio Central.  I've looked through the manual, but might
have overlooked this.

Is there a way to have both headphones and external speaker active at the
same time?  I'm thinking of being able to have audio for visitors while
still using headphones to copy.

Thanks,

73 de Chuck, WS1L

[hidden email]
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

[Don Wilhelm]

Chuck,

Yes, you can do that by soldering a jumper across the switch at the rear
of the headphone jack.
If you prefer not to add the jumper, plug stereo computer speakers into
the headphone jack and plug your headphones into the headphone jack on
the speaker.
Try different computer speakers, some mute the speakers when headphones
are plugged in, others do not.

73,
Don W3FPR

On 1/3/2021 12:58 PM, Chuck Chandler wrote:
> I've recently begun volunteering aboard the museum ship USS Slater, where
> they have a K2 in Radio Central.  I've looked through the manual, but might
> have overlooked this.
>
> Is there a way to have both headphones and external speaker active at the
> same time?  I'm thinking of being able to have audio for visitors while
> still using headphones to copy.
>
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

[Geert Jan de Groot]

On 04/01/2021 04:13, [hidden email] wrote:
> Is there a way to have both headphones and external speaker active at the
> same time?  I'm thinking of being able to have audio for visitors while
> still using headphones to copy.

In addition to Don's response, you may want to look at this:
https://www.w8fgu.com/pics/k2faob/w3fpr_K2%20audio%20Fix.pdf
http://www.w3fpr.com/download_files/FP-CB%20mounting%20photos.pdf

I have done this, using a piece of perfboard.
To avoid shorts, in my case the PCB is in a piece of heat shrink tube.

If you want a kit, check out https://www.w8fgu.com/k2_fixedaudio.html

Instead of perfboarding it, I should have bought a kit from Dave, but
sending a parcel by mail to PA0 would need me to mortgage my house, not
to mention a lot of patience (another PCB ordered recently was stuck for
*nine months* in Chicago).

The advantage is that the 2nd output is fixed audio volume, so you can
adjust the speaker audio and the headset audio separately.

In my case (connecting multiple headsets on the speaker output) this
approach has another advantage: I added audio sidetone to my K2 so that
the people using headphones can hear eachother speak, yet the
fixed-audio output doesn't have this, so there is no feedback from the
speaker.

When you use a speaker, make sure you use one that works well for SSB
audio. For visitors, I would consider making some headsets available
instead. SSB-via-speaker is more difficult to decode, SSB-via-speaker
for people without SSB ears will just result in "there was a guy playing
radio noise" at the exhibition.

73,

Geert Jan PE1HZG



______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

[Chuck Chandler]

Thanks for the tip!

73 de Chuck, WS1L

[hidden email]


On Mon, Jan 4, 2021 at 12:35 PM Geert Jan de Groot <[hidden email]> wrote:

> On 04/01/2021 04:13, [hidden email] wrote:
> > Is there a way to have both headphones and external speaker active at the
> > same time?  I'm thinking of being able to have audio for visitors while
> > still using headphones to copy.
>
> In addition to Don's response, you may want to look at this:
> https://www.w8fgu.com/pics/k2faob/w3fpr_K2%20audio%20Fix.pdf
> http://www.w3fpr.com/download_files/FP-CB%20mounting%20photos.pdf
>
> I have done this, using a piece of perfboard.
> To avoid shorts, in my case the PCB is in a piece of heat shrink tube.
>
> If you want a kit, check out https://www.w8fgu.com/k2_fixedaudio.html
>
> Instead of perfboarding it, I should have bought a kit from Dave, but
> sending a parcel by mail to PA0 would need me to mortgage my house, not
> to mention a lot of patience (another PCB ordered recently was stuck for
> *nine months* in Chicago).
>
> The advantage is that the 2nd output is fixed audio volume, so you can
> adjust the speaker audio and the headset audio separately.
>
> In my case (connecting multiple headsets on the speaker output) this
> approach has another advantage: I added audio sidetone to my K2 so that
> the people using headphones can hear eachother speak, yet the
> fixed-audio output doesn't have this, so there is no feedback from the
> speaker.
>
> When you use a speaker, make sure you use one that works well for SSB
> audio. For visitors, I would consider making some headsets available
> instead. SSB-via-speaker is more difficult to decode, SSB-via-speaker
> for people without SSB ears will just result in "there was a guy playing
> radio noise" at the exhibition.
>
> 73,
>
> Geert Jan PE1HZG
>
>
>
>

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]