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Any solution to the audio blast issue yet ?

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Enno, PF5X

Any solution to the audio blast issue yet ?

Hi all,

I wonder what the status of the audio 'artifact' or blast is. According to
PA4N, who uses F/W 3.30, it still happens, be it rarely. As a headphone
user, such audio blast is quite unacceptable to me and therefore I hope
Elecraft is addressing this issue with some priority.

Can Lyle or Wayne comment on this ?? Thanks !

Regards,

Enno Korma, PF5X

Malden, The Netherlands
_________________________________________

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<http://www.pf5x.wordpress.com/> pf5x.wordpress.com

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Eric Swartz - WA6HHQ

Re: Any solution to the audio blast issue yet ?

Administrator

This is being addressed in the current pre-beta test version.

73, Eric WA6HHQ

Enno J. Korma, PF5X wrote:

> Hi all,
>
> I wonder what the status of the audio 'artifact' or blast is. According to
> PA4N, who uses F/W 3.30, it still happens, be it rarely. As a headphone
> user, such audio blast is quite unacceptable to me and therefore I hope
> Elecraft is addressing this issue with some priority.
>
> Can Lyle or Wayne comment on this ?? Thanks !
>
>
> Regards,
>
> Enno Korma, PF5X
>
> Malden, The Netherlands
> _________________________________________
>
> <mailto:[hidden email]> [hidden email]
> <http://www.pf5x.wordpress.com/> pf5x.wordpress.com
>
> ______________________________________________________________
> 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
>

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Matt Zilmer

K3: DVR open ground problem

K3 #24 was upgraded to include the DVR earlier this year. It worked
fine while testing just after installation and configuring.

I used the DVR a few times for contesting, but not much recently. I
noticed recently that any recording I make has the hum of an open mic
(ground or shield?) superimposed on the voice signal. Seems like
there might be a bad connection, but looking at the schematic this
makes no sense - to have this problem with the DVR only. The audio
straight from the mic should have this problem as well. The mic
audio is fine though.

Anyone have experience with a problem like this? I will do the usual
- uninstalling, re-installing (reseating the connector), but since the
mic signal at the connector is digital I don't think this will help.

All ideas appreciated.

73,
matt W6NIA
K3 #24
K2 #2810
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W6ODJ

Re: Any solution to the audio blast issue yet ?

In reply to this post by Enno, PF5X

If I may chime in here, I hope very strongly that nobody is using deep-
in-the-ear type earbuds with the K3 or any other radio. TO DO SO
MIGHT RUIN YOUR EARS.

I have some Shure deep-in-the-ear earbuds that I use with my iPod on
airplane flights. They have wonderful fidelity and also almost
completely shut out the roar of the jet engines. BUT, they take about
ten seconds minimum to get out of my ears. If some radio produced an
anomalously loud blast while using them, your ears could be ruined
before you could react.

I read an article a while back about an engineer who lost his hearing
in just such an accident. In the old days, many soundcard
manufacturers installed their soundcards with a default of full
volume. This guy was trying a new soundcard using deep-in-the-ear
earbuds. By the time he could get them out of his ears, he had
permanent damage.

73,
Oliver Johns
W6ODJ

On 25 Sep 2009, at 12:07 AM, Enno J. Korma, PF5X wrote:

> Hi all,
>
> I wonder what the status of the audio 'artifact' or blast is.
> According to
> PA4N, who uses F/W 3.30, it still happens, be it rarely. As a
> headphone
> user, such audio blast is quite unacceptable to me and therefore I
> hope
> Elecraft is addressing this issue with some priority.
>
> Can Lyle or Wayne comment on this ?? Thanks !
>
>
> Regards,
>
> Enno Korma, PF5X
>
> Malden, The Netherlands
> _________________________________________
>
> <mailto:[hidden email]> [hidden email]
> <http://www.pf5x.wordpress.com/> pf5x.wordpress.com
>
> ______________________________________________________________
> 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
>

Gary Hinson

Re: Any solution to the audio blast issue yet ?

In reply to this post by Enno, PF5X

> I wonder what the status of the audio 'artifact' or blast is.

Hi Enno

FWIW I have been installing and using the latest Betas as they are
released. I use headphones at the rig many hours a day and have yet
to experience the blast. Whatever it is, I'm not triggering it [so
far] on K3 #2887. It's not an "issue" hr.

Are you saying *you* have heard the blast? If so, what were you doing
at the time? What mode, what activity, what controls were you
adjusting or had you recently adjusted? I suspect more clues about
what triggers the blast will help trace it.

73,
Gary ZL2iFB

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Greg - AB7R

Re: K3: DVR open ground problem

In reply to this post by Matt Zilmer

Hi Matt. I used the DVR controlled by N1MM in the last NAQP phone contest and it
worked and sounded fine.

-------------------------
73,
Greg - AB7R
Whidbey Island WA
NA-065

On Fri Sep 25 11:04 , Matt Zilmer sent:

>K3 #24 was upgraded to include the DVR earlier this year. It worked
>fine while testing just after installation and configuring.
>
>I used the DVR a few times for contesting, but not much recently. I
>noticed recently that any recording I make has the hum of an open mic
>(ground or shield?) superimposed on the voice signal. Seems like
>there might be a bad connection, but looking at the schematic this
>makes no sense - to have this problem with the DVR only. The audio
>straight from the mic should have this problem as well. The mic
>audio is fine though.
>
>Anyone have experience with a problem like this? I will do the usual
>- uninstalling, re-installing (reseating the connector), but since the
>mic signal at the connector is digital I don't think this will help.
>
>All ideas appreciated.
>
>73,
>matt W6NIA
>K3 #24
>K2 #2810
>______________________________________________________________
>Elecraft mailing list
>Home: http://mailman.qth.net/mailman/listinfo/elecraft
>Help: http://mailman.qth.net/mmfaq.htm
>Post: [hidden email]','','','')">[hidden email]
>
>This list hosted by: http://www.qsl.net
>Please help support this email list: http://www.qsl.net/donate.html

David Cutter

Re: Any solution to the audio blast issue yet ?

In reply to this post by W6ODJ

A peak limiter combined with a fast short or open circuit is the only way to
prevent ear damage. I've listened to earphones "protected" by vdr and,
although the peak voltage delivered to the headset is limited, the waveform
simply flattens off and the audio power pulse is still deafening.

This problem I think is addressed by telecom users eg in call centres and
has been around a loooong time. One of these days I'll make a little
outboard suppressor to use with my headphones where-ever I take them.

David
G3UNA

> If I may chime in here, I hope very strongly that nobody is using deep-
> in-the-ear type earbuds with the K3 or any other radio. TO DO SO
> MIGHT RUIN YOUR EARS.
> >
> 73,
> Oliver Johns
> W6ODJ
>
>
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Frank R. Oppedijk

Re: Any solution to the audio blast issue yet ?

In reply to this post by Gary Hinson

Hi Gary,

I think Enno was making his remarks here on the Elecraft reflector
because of an earlier remark that *I* made on a Dutch K3 email list,
and that he was referring to the audio blast that *I* encountered.

I was in a CW QSO on 20 meters at the moment the audio blast
occurred. I probably had bandwidth set to 400 Hz, using my 400 Hz
filter, and may very well have had the NR on, probably at setting
F1-1. NB most probably was off. I don't recall having adjusted any
controls just before. At the moment the audio blast happened, I was
in QSO with DP1POL and was sending my report at that very moment.

Although the blast startled me, I did have the wits to continue
sending my report, before pulling off my headphones and switching the
rig off and on in order to stop the sound. AF GAIN was set to low.
This may explain my relatively cool reaction, as I have heard from
others here on the reflector that had only one thing left in their
minds when the blast occurred: get them phones off my ears!

Hope this helps a bit.

73,

Frank PA4N

At 21:17 25/09/2009, Gary Hinson wrote:

> > I wonder what the status of the audio 'artifact' or blast is.
>
>Hi Enno
>
>FWIW I have been installing and using the latest Betas as they are
>released. I use headphones at the rig many hours a day and have yet
>to experience the blast. Whatever it is, I'm not triggering it [so
>far] on K3 #2887. It's not an "issue" hr.
>
>Are you saying *you* have heard the blast? If so, what were you doing
>at the time? What mode, what activity, what controls were you
>adjusting or had you recently adjusted? I suspect more clues about
>what triggers the blast will help trace it.
>
>73,
>Gary ZL2iFB
>
>______________________________________________________________
>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

Bill VanAlstyne W5WVO

Re: Any solution to the audio blast issue yet ?

You guys must have missed this:

"This is being addressed in the current pre-beta test version.
"73, Eric WA6HHQ"

Hang in there. Until this is fixed for sure, I'm not using headphones at all.
Not worth the risk.

Bill W5WVO

Frank R. Oppedijk wrote:

> Hi Gary,
>
> I think Enno was making his remarks here on the Elecraft reflector
> because of an earlier remark that *I* made on a Dutch K3 email list,
> and that he was referring to the audio blast that *I* encountered.
>
> I was in a CW QSO on 20 meters at the moment the audio blast
> occurred. I probably had bandwidth set to 400 Hz, using my 400 Hz
> filter, and may very well have had the NR on, probably at setting
> F1-1. NB most probably was off. I don't recall having adjusted any
> controls just before. At the moment the audio blast happened, I was
> in QSO with DP1POL and was sending my report at that very moment.
>
> Although the blast startled me, I did have the wits to continue
> sending my report, before pulling off my headphones and switching the
> rig off and on in order to stop the sound. AF GAIN was set to low.
> This may explain my relatively cool reaction, as I have heard from
> others here on the reflector that had only one thing left in their
> minds when the blast occurred: get them phones off my ears!
>
> Hope this helps a bit.
>
> 73,
>
> Frank PA4N
>
>
> At 21:17 25/09/2009, Gary Hinson wrote:
>>> I wonder what the status of the audio 'artifact' or blast is.
>>
>> Hi Enno
>>
>> FWIW I have been installing and using the latest Betas as they are
>> released. I use headphones at the rig many hours a day and have yet
>> to experience the blast. Whatever it is, I'm not triggering it [so
>> far] on K3 #2887. It's not an "issue" hr.
>>
>> Are you saying *you* have heard the blast? If so, what were you
>> doing at the time? What mode, what activity, what controls were you
>> adjusting or had you recently adjusted? I suspect more clues about
>> what triggers the blast will help trace it.
>>
>> 73,
>> Gary ZL2iFB
>>
>> ______________________________________________________________
>> 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
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
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>
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> Please help support this email list: http://www.qsl.net/donate.html

David Cutter

Re: Any solution to the audio blast issue yet ?

In reply to this post by W6ODJ

This is an interesting site and they are keen to promote hearing health.

http://www.headwize.com/projects/limiter_prj.htm

David
G3UNA

snip

> If I may chime in here, I hope very strongly that nobody is using deep-
> in-the-ear type earbuds with the K3 or any other radio. TO DO SO
> MIGHT RUIN YOUR EARS.
> >
> 73,
> Oliver Johns
> W6ODJ
>
>
>
>