[Elecraft] kx2 SSB always in TX

[Don Wilhelm]

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 support at elecraft.com 
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 <donwilh at embarqmail.com 
> <mailto:donwilh at embarqmail.com>> 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.
>     >
>     >
>