k2 earphone jack

[jferg977]

Comrades,
The speaker switch in the earphone jack on my k2 has quit.  Has anyone  found
a stouter replacement for J2?
 
73  AI4TO   John Ferguson M/V  Arcadian



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[drewko]

On Thu, 24 Jan 2008 09:01:20 -0500 (EST), AI4TO wrote:

>Comrades,
>The speaker switch in the earphone jack on my k2 has quit.  Has anyone  found
>a stouter replacement for J2?
>
>73  AI4TO   John Ferguson M/V  Arcadian
>

One solution is to wire in a speaker/headphone toggle switch when you
replace the jack; then leave the headphones plugged in all the time.
That will eliminate wear on the jack. (It's also lot more convenient
if you do a lot of plugging and unplugging of the headphones.) I
mounted the switch on the rear panel, below the speaker jack. I posted
a detailed article about this some months ago.

73,
Drew
AF2Z



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[Don Wilhelm-4]

If you are going to add the toggle switch, there is no need to replace
the jack.
The toggle switch replaces the contacts that no longer work.
73,
Don W3FPR

[hidden email] wrote:

> One solution is to wire in a speaker/headphone toggle switch when you
> replace the jack; then leave the headphones plugged in all the time.
> That will eliminate wear on the jack. (It's also lot more convenient
> if you do a lot of plugging and unplugging of the headphones.) I
> mounted the switch on the rear panel, below the speaker jack. I posted
> a detailed article about this some months ago.
>
> 73,
> Drew
> AF2Z
>
>  

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[drewko]

On Thu, 24 Jan 2008 10:08:26 -0500, Don W3FPR wrote:

>If you are going to add the toggle switch, there is no need to replace
>the jack.
>The toggle switch replaces the contacts that no longer work.
>73,
>Don W3FPR
>


The defective contact lies at the rear pins of the jack, which you can
easily parallel with one pole of the switch. But you will also want to
switch the ground (i.e., sleeve) terminal of the jack with the other
pole, opposite  throw (a DPDT switch). If you don't switch the
ground/sleeve line the headphones will end up being in parallel with
the speaker when it is selected.

The ground/sleeve terminal lies on the board side of the jack so you
will have to remove the jack to get to it; might as well replace it
with a good jack.  

Of course, you could leave the defective jack in place, cut the ground
circuit trace and solder tack the switch across it. But that's no
easier than just replacing the jack with a good one, and no messing
with the traces.

Referring to my notes, the switch I used was p/n: 8011 from
Web-tronics. It is a DPDT (on-x-on) miniature size. Fits neatly in the
transverter hole beneath the speaker jack.

73,
Drew
AF2Z

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[crstrode]

Regarding the short life span of the Elecraft headphone jacks; I have replaced the jack on my K2 twice.  I just finished a K1 two weeks ago, and guess what?  The headphone jack failed the first time a plug was inserted.  Luckily, I had a spare laying around in my Elecraft spare parts bin.

Similarly, the K1 key jack had a bit of debris (a fragment of black plastic) inside that took a considerable amount of wiggling and shaking to get it cleared and working.

When do you suppose Elecraft will recognize this shortcoming and provide more robust jacks?

By the way, I've never had a problem with getting replacements from Elecraft.  The spare I had was sent to me very quickly and at no cost the last time my K2 jack failed.


Carl Strode
WA7CS
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[Sam Binkley]

Subject: Re: [Elecraft] k2 earphone jack

When the jack on my K2 failed, after I replaced it, and not wanting to go
through that again, I went with an external solution.  I plugged a short "Y"
cord (from RS) into the external speaker jack and ran one extention off that
on the underside of my operating desk to the front edge and "mounted" the
female end in a hole I drilled.  That's where I plug my headphones.  No cord
dangling across the desk.  The other end of the "Y" cord receives the cord
from my external speaker.  To turn the speaker off I simply unplug the
speaker.  The two cords are different colors so it is easy to tell which one
to unplug.
73,
Sam KL7V

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[crstrode]

 Yep - that is what I do as well.  It' a bit tedious takig the radio apart again and again, so the headphones are connected to the external speaker plug.  The audio level is different there as well, and it suits me just fine.

However, it certainly would be nice if the front jack would work.

When the jack fails on my K1, and I'm out in the bushes, I guess I'll just have to pack-up and go home.


Carl Strode
WA7CS




Subject: Re: [Elecraft] k2 earphone jack

When the jack on my K2 failed, after I replaced it, and not wanting to go through that again, I went with an external solution.  I plugged a short "Y"
cord (from RS) into the external speaker jack and ran one extention off that on the underside of my operating desk to the front edge and "mounted" the female end in a hole I drilled.  That's where I plug my headphones.  No cord dangling across the desk.  The other end of the "Y" cord receives the cord from my external speaker.  To turn the speaker off I simply unplug the speaker.  The two cords are different colors so it is easy to tell which one to unplug.
73,
Sam KL7V

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[Don Wilhelm-4]

Not that I have been able to find.  The problem is twofold 1) it has to
have the same form factor if it is to fit, and 2) it must have the
isolated set of contacts for the speaker line.

As it has been mentioned, one could mount a larger jack on the rear
panel, or use the external speaker jack on the rear.

73,
Don W3FPR

KXB wrote:

> Has anyone come up with a improved jack that will fit?
>  
> w7kxb-BillHarris
>
>     ----- Original Message -----
>     *From:* Don Wilhelm <mailto:[hidden email]>
>     *To:* [hidden email] <mailto:[hidden email]>
>     *Sent:* Thursday, January 24, 2008 7:08 AM
>     *Subject:* Re: [Elecraft] k2 earphone jack
>
>     If you are going to add the toggle switch, there is no need to
>     replace
>     the jack.
>     The toggle switch replaces the contacts that no longer work.
>     73,
>     Don W3FPR
>
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