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New behavior using JT65

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David F. Reed-2

New behavior using JT65

I have been using my KX3 for JT65 successfully for about a year, but now
get this new behavior...

When I go to transmit, all is well; when the transmission should end,
the tones stop as expected, but the KX3 stays in transmit (until I hit
the XMIT button). Clearly something is amiss.

I reboot the system, and things go the same way; no effect.

Any clues as to what to look for will be greatly appreciated.

Thanks & 73 de Dave, W5SV

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Don Wilhelm

Re: [KX3] New behavior using JT65

Dave,

Are you using VOX? If so, try replacing the cable between the soundcard
and the KX3 mic jack, I am thinking it may have a broken shield and is
picking up noise.

Try switching to PTT instead of VOX. I don't know your software
application nor its capabilities, but you likely need a "one transistor
keying interface" to drive the KX3 PTT input.

73,
Don W3FPR

On 5/25/2017 5:42 PM, 'David F. Reed' [hidden email] [KX3] wrote:
> I have been using my KX3 for JT65 successfully for about a year, but now
> get this new behavior...
>
> When I go to transmit, all is well; when the transmission should end,
> the tones stop as expected, but the KX3 stays in transmit (until I hit
> the XMIT button). Clearly something is amiss.
>
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David F. Reed-2

Re: [KX3] New behavior using JT65

Don, thanks for the suggestion; it seems somehow I got VOX turned on
when it was off before...
Mystery solved.

Thanks & 73 de Dave, W5SV

On 5/25/17 17:27, Don Wilhelm [hidden email] [KX3] wrote:

> Dave,
>
> Are you using VOX? If so, try replacing the cable between the soundcard
> and the KX3 mic jack, I am thinking it may have a broken shield and is
> picking up noise.
>
> Try switching to PTT instead of VOX. I don't know your software
> application nor its capabilities, but you likely need a "one transistor
> keying interface" to drive the KX3 PTT input.
>
> 73,
> Don W3FPR
>
> On 5/25/2017 5:42 PM, 'David F. Reed' [hidden email] [KX3] wrote:
>> I have been using my KX3 for JT65 successfully for about a year, but now
>> get this new behavior...
>>
>> When I go to transmit, all is well; when the transmission should end,
>> the tones stop as expected, but the KX3 stays in transmit (until I hit
>> the XMIT button). Clearly something is amiss.
>>

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Don Wilhelm

Re: [KX3] New behavior using JT65

Dave,

You still may want to check that cable - or perhaps the soundcard has a
high noise floor.
When the audio stops, the KX3 should drop out of transmit when using VOX.
Of course, I don't know what happens if VOX and PTT are asserted together.
Cables are always one of the high failure items in any system.

73,
Don W3FPR

On 5/25/2017 6:43 PM, David F. Reed wrote:

> Don, thanks for the suggestion; it seems somehow I got VOX turned on
> when it was off before...
> Mystery solved.
>
> Thanks & 73 de Dave, W5SV
>
> On 5/25/17 17:27, Don Wilhelm [hidden email] [KX3] wrote:
>> Dave,
>>
>> Are you using VOX? If so, try replacing the cable between the soundcard
>> and the KX3 mic jack, I am thinking it may have a broken shield and is
>> picking up noise.
>>
>> Try switching to PTT instead of VOX. I don't know your software
>> application nor its capabilities, but you likely need a "one transistor
>> keying interface" to drive the KX3 PTT input.
>>
>> 73,
>> Don W3FPR
>>
>> On 5/25/2017 5:42 PM, 'David F. Reed' [hidden email] [KX3] wrote:
>>> I have been using my KX3 for JT65 successfully for about a year, but
>>> now
>>> get this new behavior...
>>>
>>> When I go to transmit, all is well; when the transmission should end,
>>> the tones stop as expected, but the KX3 stays in transmit (until I hit
>>> the XMIT button). Clearly something is amiss.
>>>
>
>

Leo Aniol

Re: [KX3] New behavior using JT65

Has been happening to me here also. And it is intermittant.

Leo, AI5II

On May 25, 2017 5:54 PM, "Don Wilhelm" <[hidden email]> wrote:

> Dave,
>
> You still may want to check that cable - or perhaps the soundcard has a
> high noise floor.
> When the audio stops, the KX3 should drop out of transmit when using VOX.
> Of course, I don't know what happens if VOX and PTT are asserted together.
> Cables are always one of the high failure items in any system.
>
> 73,
> Don W3FPR
>
> On 5/25/2017 6:43 PM, David F. Reed wrote:
>
>> Don, thanks for the suggestion; it seems somehow I got VOX turned on when
>> it was off before...
>> Mystery solved.
>>
>> Thanks & 73 de Dave, W5SV
>>
>> On 5/25/17 17:27, Don Wilhelm [hidden email] [KX3] wrote:
>>
>>> Dave,
>>>
>>> Are you using VOX? If so, try replacing the cable between the soundcard
>>> and the KX3 mic jack, I am thinking it may have a broken shield and is
>>> picking up noise.
>>>
>>> Try switching to PTT instead of VOX. I don't know your software
>>> application nor its capabilities, but you likely need a "one transistor
>>> keying interface" to drive the KX3 PTT input.
>>>
>>> 73,
>>> Don W3FPR
>>>
>>> On 5/25/2017 5:42 PM, 'David F. Reed' [hidden email] [KX3] wrote:
>>>
>>>> I have been using my KX3 for JT65 successfully for about a year, but now
>>>> get this new behavior...
>>>>
>>>> When I go to transmit, all is well; when the transmission should end,
>>>> the tones stop as expected, but the KX3 stays in transmit (until I hit
>>>> the XMIT button). Clearly something is amiss.
>>>>
>>>>
>>
>>
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>

ve3ibw

Re: [KX3] New behavior using JT65

That's weird. I have not experienced an intermittent VOX. Mind you, I run
with VOX on all the time and have at least a hundred hours in this mode and
VOX setting. Very stable.

What firmware level are you at?

regards,
Brian
VE3IBW

On Thu, May 25, 2017 at 8:16 PM, Leo Aniol <[hidden email]> wrote:

> Has been happening to me here also. And it is intermittant.
>
> Leo, AI5II
>
> On May 25, 2017 5:54 PM, "Don Wilhelm" <[hidden email]> wrote:
>
> > Dave,
> >
> > You still may want to check that cable - or perhaps the soundcard has a
> > high noise floor.
> > When the audio stops, the KX3 should drop out of transmit when using VOX.
> > Of course, I don't know what happens if VOX and PTT are asserted
> together.
> > Cables are always one of the high failure items in any system.
> >
> > 73,
> > Don W3FPR
> >
> > On 5/25/2017 6:43 PM, David F. Reed wrote:
> >
> >> Don, thanks for the suggestion; it seems somehow I got VOX turned on
> when
> >> it was off before...
> >> Mystery solved.
> >>
> >> Thanks & 73 de Dave, W5SV
> >>
> >> On 5/25/17 17:27, Don Wilhelm [hidden email] [KX3] wrote:
> >>
> >>> Dave,
> >>>
> >>> Are you using VOX? If so, try replacing the cable between the
> soundcard
> >>> and the KX3 mic jack, I am thinking it may have a broken shield and is
> >>> picking up noise.
> >>>
> >>> Try switching to PTT instead of VOX. I don't know your software
> >>> application nor its capabilities, but you likely need a "one transistor
> >>> keying interface" to drive the KX3 PTT input.
> >>>
> >>> 73,
> >>> Don W3FPR
> >>>
> >>> On 5/25/2017 5:42 PM, 'David F. Reed' [hidden email] [KX3] wrote:
> >>>
> >>>> I have been using my KX3 for JT65 successfully for about a year, but
> now
> >>>> get this new behavior...
> >>>>
> >>>> When I go to transmit, all is well; when the transmission should end,
> >>>> the tones stop as expected, but the KX3 stays in transmit (until I hit
> >>>> the XMIT button). Clearly something is amiss.
> >>>>
> >>>>
> >>
> >>
> > ______________________________________________________________
> > 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]
> >
> ______________________________________________________________
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>
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> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

Regards,
Brian
VE3IBW

Don Wilhelm

Re: [KX3] New behavior using JT65

Brian,

As I told the original poster, I suspect a bad audio cable that is
picking up noise and continuing to activate the VOX. He had both VOX
and PTT active, and I don't know if that has anything to do with it.
I don't think it is a KX3 problem.

73,
Don W3FPR

On 5/26/2017 9:59 AM, Brian Waterworth wrote:
> That's weird. I have not experienced an intermittent VOX. Mind you,
> I run with VOX on all the time and have at least a hundred hours in
> this mode and VOX setting. Very stable.
>
> What firmware level are you at?
>

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