Elecraft

kx2 SSB always in TX

Classic

List

Threaded

10 messages Options

Michael Walker

kx2 SSB always in TX

Hi All

I have had a kx2 since they first came out and I have chased this problem
since day 1. But, since I never use it on SSB, I have never worried about
it. s/n 337

Everything I plug in the MH3 Mic, the radio goes into TX. I have the
latest firmware on it.

If Menu:MIC BTN is set to OFF, it does not TX with the PTT button on the MIC
If Menu:MIC BTN is set to PTT, the radios into TX as soon as you plug the
MIC in
If Menu:MIC BTN is set to Ptt UP.dn, the radio goes into TX as soon as you
plug the MIC in

VOX is off

Next test was to try the internal MIC.

My testing is in LSB on 40M.

Touching XMIT puts the radio into TX, but the only way out of TX is to hit
the ATU button. Hitting XMIT again does nothing. Unfortunately, that
doesn't work either.

I was headed out on a Canoe trip tomorrow and was hoping to use SSB as a
mode while I was in the Great White North.

Any thoughts of the next steps to solve this in a few hours?

Mike va3mw
______________________________________________________________
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]

Michael Walker

Re: kx2 SSB always in TX

Update on this.

If you are in the Menu, the XMIT does not work. If out of the Menu, it
works as expected as does Vox.

However, the External Mic problem still exists.

I did Ohm out the MH3 PTT line and it isn't shorted at all, so the Mic is
not the issue.

Mike va3mw

On Tue, Jun 30, 2020 at 12:59 PM Michael Walker <[hidden email]>
wrote:

> Hi All
>
> I have had a kx2 since they first came out and I have chased this problem
> since day 1. But, since I never use it on SSB, I have never worried about
> it. s/n 337
>
> Everything I plug in the MH3 Mic, the radio goes into TX. I have the
> latest firmware on it.
>
> If Menu:MIC BTN is set to OFF, it does not TX with the PTT button on the
> MIC
> If Menu:MIC BTN is set to PTT, the radios into TX as soon as you plug the
> MIC in
> If Menu:MIC BTN is set to Ptt UP.dn, the radio goes into TX as soon as you
> plug the MIC in
>
> VOX is off
>
> Next test was to try the internal MIC.
>
> My testing is in LSB on 40M.
>
> Touching XMIT puts the radio into TX, but the only way out of TX is to hit
> the ATU button. Hitting XMIT again does nothing. Unfortunately, that
> doesn't work either.
>
> I was headed out on a Canoe trip tomorrow and was hoping to use SSB as a
> mode while I was in the Great White North.
>
> Any thoughts of the next steps to solve this in a few hours?
>
> Mike va3mw
>
>

______________________________________________________________
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

Re: kx2 SSB always in TX

In reply to this post by Michael Walker

Mike,

Do you have a normal stereo plug available? - or a stereo audio cable
with nothing on the far end? If so, plug that in and see if the same
thing happens - make certain it is in all the way. If not, the MH3 has
a problem.
If it still goes into transmit, the KX2 has a problem.

73,
Don W3FPR

On 6/30/2020 12:59 PM, Michael Walker wrote:

Michael Walker

Re: kx2 SSB always in TX

Thanks Don

Plugging a Stereo (3 conductor) does not cause the radio to go into TX
with Menu:MIC BTN set to Ptt.

Looking like a bad MH3.

I did ohm out the MIC between ground and the PTT line and it did show
open. I would be expecting a short.

Mike va3mw

On Tue, Jun 30, 2020 at 1:18 PM Don Wilhelm <[hidden email]> wrote:

> Mike,
>
> Do you have a normal stereo plug available? - or a stereo audio cable
> with nothing on the far end? If so, plug that in and see if the same
> thing happens - make certain it is in all the way. If not, the MH3 has
> a problem.
> If it still goes into transmit, the KX2 has a problem.
>
> 73,
> Don W3FPR
>
> On 6/30/2020 12:59 PM, Michael Walker wrote:
> > Hi All
> >
> > I have had a kx2 since they first came out and I have chased this problem
> > since day 1. But, since I never use it on SSB, I have never worried
> about
> > it. s/n 337
> >
> > Everything I plug in the MH3 Mic, the radio goes into TX. I have the
> > latest firmware on it.
> >
> > If Menu:MIC BTN is set to OFF, it does not TX with the PTT button on the
> MIC
> > If Menu:MIC BTN is set to PTT, the radios into TX as soon as you plug the
> > MIC in
> > If Menu:MIC BTN is set to Ptt UP.dn, the radio goes into TX as soon as
> you
> > plug the MIC in
> >
> > VOX is off
> >
>

Don Wilhelm

Re: kx2 SSB always in TX

Mike,

Did you read the continuity between the 1st and 2nd rings of the MH3 plug?
The MH3 PTT connects those two rings (and not the shell).

73,
Don W3FPR

On 6/30/2020 1:27 PM, Michael Walker wrote:

> Thanks Don
>
> Plugging a Stereo (3 conductor) does not cause the radio to go into
> TX with Menu:MIC BTN set to Ptt.
>
> Looking like a bad MH3.
>
> I did ohm out the MIC between ground and the PTT line and it did show
> open. I would be expecting a short.
>
> Mike va3mw
>

Michael Walker

Re: kx2 SSB always in TX

Ops, missed that. I used shield ground, not logic ground.

However, when I tested Ring 1 to Ring 2, it is open and then shorts when
you push the PTT button. This seems to be working as designed.

I did confirm that mic is plugged in all the way and did a close visual
look at it to make sure.

Mike va3mw

On Tue, Jun 30, 2020 at 2:56 PM Don Wilhelm <[hidden email]> wrote:

> Mike,
>
> Did you read the continuity between the 1st and 2nd rings of the MH3 plug?
> The MH3 PTT connects those two rings (and not the shell).
>
> 73,
> Don W3FPR
>
> On 6/30/2020 1:27 PM, Michael Walker wrote:
> > Thanks Don
> >
> > Plugging a Stereo (3 conductor) does not cause the radio to go into
> > TX with Menu:MIC BTN set to Ptt.
> >
> > Looking like a bad MH3.
> >
> > I did ohm out the MIC between ground and the PTT line and it did show
> > open. I would be expecting a short.
> >
> > Mike va3mw
> >
>
>

Nr4c

Re: kx2 SSB always in TX

In reply to this post by Michael Walker

What mic are you using?

Is anything else plugged into the radio?

Sent from my iPhone
...nr4c. bill

> On Jun 30, 2020, at 1:03 PM, Michael Walker <[hidden email]> wrote:
>
> Hi All
>
> I have had a kx2 since they first came out and I have chased this problem
> since day 1. But, since I never use it on SSB, I have never worried about
> it. s/n 337
>
> Everything I plug in the MH3 Mic, the radio goes into TX. I have the
> latest firmware on it.
>
> If Menu:MIC BTN is set to OFF, it does not TX with the PTT button on the MIC
> If Menu:MIC BTN is set to PTT, the radios into TX as soon as you plug the
> MIC in
> If Menu:MIC BTN is set to Ptt UP.dn, the radio goes into TX as soon as you
> plug the MIC in
>
> VOX is off
>
> Next test was to try the internal MIC.
>
> My testing is in LSB on 40M.
>
> Touching XMIT puts the radio into TX, but the only way out of TX is to hit
> the ATU button. Hitting XMIT again does nothing. Unfortunately, that
> doesn't work either.
>
> I was headed out on a Canoe trip tomorrow and was hoping to use SSB as a
> mode while I was in the Great White North.
>
> Any thoughts of the next steps to solve this in a few hours?
>
> Mike va3mw
> ______________________________________________________________
> 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

Re: kx2 SSB always in TX

In reply to this post by Michael Walker

Mike,

Solution unknown - either you have a bad mic plug on that MH3, or there
is a problem with your KX2 mic jack.
Do you know anyone else who has a KX2 or KX3 that could try your microphone?

73,
Don W3FPR

On 6/30/2020 3:02 PM, Michael Walker wrote:
> Ops, missed that. I used shield ground, not logic ground.
>
> However, when I tested Ring 1 to Ring 2, it is open and then shorts
> when you push the PTT button. This seems to be working as designed.
>
> I did confirm that mic is plugged in all the way and did a close
> visual look at it to make sure.
>
>

______________________________________________________________
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]

Michael Walker

Re: kx2 SSB always in TX

Hi

No, nothing else plugged into the radio.

As for a 2nd Mic, not at this time and I am not at home near my workbench
which has lots of bits to try things. If I have time tonight, I will open
up the Mic and do some more tracing.

I think we have gone as far as we can go at this point given the tools I
have. I'll do more lab work on it when I get back home next week.

I got the internal mic to work as it should, so I can make do with that for
the time being.

thanks for your help.

73, Mike va3mw

On Tue, Jun 30, 2020 at 4:45 PM Don Wilhelm <[hidden email]> wrote:

> Mike,
>
> Solution unknown - either you have a bad mic plug on that MH3, or there
> is a problem with your KX2 mic jack.
> Do you know anyone else who has a KX2 or KX3 that could try your
> microphone?
>
> 73,
> Don W3FPR
>
> On 6/30/2020 3:02 PM, Michael Walker wrote:
> > Ops, missed that. I used shield ground, not logic ground.
> >
> > However, when I tested Ring 1 to Ring 2, it is open and then shorts
> > when you push the PTT button. This seems to be working as designed.
> >
> > I did confirm that mic is plugged in all the way and did a close
> > visual look at it to make sure.
> >
> >
>
>

Don Wilhelm

Re: kx2 SSB always in TX

Mike,

I am wondering if the shaft (sleeve) on the mic plug is just a bit too
long - try backing the plug out a tiny bit at a time (thickness of heavy
paper) to see if that takes care of it.

That is all I can think of. I suggest you contact [hidden email]
for additional suggestions.

The most positive test would be for you to try that same mic in a
different KX3 or KX3. If it works OK, then you will know that you have
a problem with your mic jack in the KX2 - even though it behaved with
the stereo plug.
I would not suggest taking the mic apart, I suspect from your ohmmeter
measurement that the mic is OK and the problem is with the plug.

73,
Don W3FPR

On 6/30/2020 4:48 PM, Michael Walker wrote:

> Hi
>
> No, nothing else plugged into the radio.
>
> As for a 2nd Mic, not at this time and I am not at home near my
> workbench which has lots of bits to try things. If I have time
> tonight, I will open up the Mic and do some more tracing.
>
> I think we have gone as far as we can go at this point given the tools
> I have. I'll do more lab work on it when I get back home next week.
>
> I got the internal mic to work as it should, so I can make do with
> that for the time being.
>
> thanks for your help.
>
> 73, Mike va3mw
>
>
> On Tue, Jun 30, 2020 at 4:45 PM Don Wilhelm <[hidden email]
> <mailto:[hidden email]>> wrote:
>
> Mike,
>
> Solution unknown - either you have a bad mic plug on that MH3, or
> there
> is a problem with your KX2 mic jack.
> Do you know anyone else who has a KX2 or KX3 that could try your
> microphone?
>
> 73,
> Don W3FPR
>
> On 6/30/2020 3:02 PM, Michael Walker wrote:
> > Ops, missed that. I used shield ground, not logic ground.
> >
> > However, when I tested Ring 1 to Ring 2, it is open and then shorts
> > when you push the PTT button. This seems to be working as designed.
> >
> > I did confirm that mic is plugged in all the way and did a close
> > visual look at it to make sure.
> >
> >
>