K2 Speaker not muting?
Locked
 
|
Hello,
In the CQWW cw contest I operated with K9VV as VP2VVV with K2/100 and wire antenna. On Saturday afternoon while Fred was operating, I suddenly could hear the K2 receiver even though Fred was using a headset. We changed headsets and that did not mute the speaker. I vaguely remember reading on the reflector about this before. I went to the elecraft website and tried a search but to no avail. Anybody got the solution? I find it hard to believe that the front panel jack could 'wear out' this quickly. I have only used the K2 in contests about 4 times and the headphones typically go in on Friday nite and stay there until Sunday evening. Otherwise the K2 sits in a Pelican case awaiting its' next adventure. BTW, we made 2700 Qs including 64 countries on 80m. This was with 66ft long sloping wire fed at the bottom and ground was 1" strap thrown over the jetty into sea water. The K2/100 was routed thru the KAT 100 for all band operation. We only operated about 34 hours as we did not want to incur the wrath of sleeping xyls hearing both sides of cw contact so we did miss some prime time(s) at EU sunrise plus our own sunrise...yes, I know I could have 'popped' the top off and disconnected the speaker but swimming in the ocean and having a brewski precluded any 'technical' operations, HI. Appreciate any suggestions, 73 Tom K6CT aka CX7TT _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
Re: K2 Speaker not muting?
|
|
Hello Tom,
> In the CQWW cw contest I operated with K9VV as VP2VVV with K2/100 and > wire antenna. On Saturday afternoon while Fred was operating, I suddenly > could hear the K2 receiver even though Fred was using a headset. We > changed headsets and that did not mute the speaker. I vaguely remember > reading on the reflector about this before. I went to the elecraft > website and tried a search but to no avail. > Anybody got the solution? I find it hard to believe that the front panel > jack could 'wear out' this quickly. I have only used the K2 in contests > about 4 times and the headphones typically go in on Friday nite and stay > there until Sunday evening. Otherwise the K2 sits in a Pelican case > awaiting its' next adventure. I have the same problem here with my K2 #01181 since 2 or 3 months. The rig is ongoing in use, with plug in and pull out the headphone all along. But I thing is not to be depending on the number of plug-ins and pull-outs. Maybe the spring steel inside the jack will be softer/lazier or the plastic material of the housing of the jack will lose it's softener and do not hold tight, so the contacts do no longer close. I have noticed, it is not the full sound intensity which I can hear with a pluged-in headphone from the speaker. As the only one solution I see is to change the jack itself. -- 72/73 de Ingo, DK3RED - Don't forget: the fun is the power! [hidden email] - www.qrp4fun.de DL-QRP-AG #824 - www.dl-qrp-ag.de QRP ARCI #11295 - www.qrparci.org DARC #2360404 - www.darc.de _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
Re: Re: K2 Speaker not muting?
Administrator
|
I am on my 3rd jack. I read a suggestion that overheating during
soldering weakens the jack so I was extra careful this time. But I recently saw a new, profesionally-built K2 that had a broken jack. I think this problem is more common than was thought. 73, Leigh/WA5ZNU _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
|
|
In reply to this post by CTMorton
Tom,
Glad to hear the K2 is working good for you otherwise. The normal problem is the other way around, the speaker does not come on after removing the headset plug. Although it could be that the headphone jack contact had failed to open, I would consider that to be rare. You may want to check to see if any conducting foreign object has become lodged below the headphone jack - if you don't find anything present, then replace the headphone jack. As a 'work-around', you can plug a spare headphone plug (or any other 3.5mm object) into the external speaker jack on the back - that will silence the speaker and still allow the headphones to work. 73, Don W3FPR > -----Original Message----- > > Hello, > In the CQWW cw contest I operated with K9VV as VP2VVV with K2/100 and > wire antenna. On Saturday afternoon while Fred was operating, I suddenly > could hear the K2 receiver even though Fred was using a headset. We > changed headsets and that did not mute the speaker. I vaguely remember > reading on the reflector about this before. I went to the elecraft > website and tried a search but to no avail. > No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.430 / Virus Database: 268.15.2/559 - Release Date: 11/30/2006 5:07 AM _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
|
|
In reply to this post by Leigh L. Klotz Jr WA5ZNU
I wonder how many headphone jack failures are the result of hitting the
headphone plug when the AF Gain control is rotated - the two are quite close, and yes that jack will not tolerate a lot of lateral motion before failing. I just though of a 'cure', wire up a short extension with flexible wire (buy a short headphone extension cord and cut about 4 inches from the jack end), and then wire a right angle 3.5mm plug (such as Mouser 171-3308-EX) to the end that will plug into the K2. 73, Don W3FPR > -----Original Message----- > > I am on my 3rd jack. I read a suggestion that overheating during > soldering weakens the jack so I was extra careful this time. But I > recently saw a new, profesionally-built K2 that had a broken jack. I > think this problem is more common than was thought. > 73, > Leigh/WA5ZNU > -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.430 / Virus Database: 268.15.2/559 - Release Date: 11/30/2006 5:07 AM _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
|
|
Could the headphone jack be remote? Could a jack be mounted to the back
panel and wired to the headphone jack pads on the circuit board? That would open up the possibility of using some more robust open frame switchcraft shorting jacks. - Keith - -----Original Message----- I just though of a 'cure', wire up a short extension with flexible wire (buy a short headphone extension cord and cut about 4 inches from the jack end), and then wire a right angle 3.5mm plug (such as Mouser 171-3308-EX) to the end that will plug into the K2. 73, Don W3FPR _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
RE: Re: K2 Speaker not muting?
|
|
In reply to this post by Don Wilhelm-3
That's what I use on my K2 and my K2 has the original jack from when it was
built in 2000. My adapter has a right-angle plug that goes into the K2, which serves to keep it out of my way when reaching for the Audio Gain as well as preventing side-force caused by bumping the plug. A short length of flexible wire connects to a 1/4 in in-line stereo jack for my phones. I can't say the adapter is responsible for my not having had any trouble with the phones jack, but it sure seemed like a good idea. I use phones on my K2 a lot so that jack has been exercised by inserting and removing a plug many hundreds of times by now. Ron AC7AC -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of Don Wilhelm Sent: Thursday, November 30, 2006 12:07 PM To: Elecraft Subject: RE: [Elecraft] Re: K2 Speaker not muting? I wonder how many headphone jack failures are the result of hitting the headphone plug when the AF Gain control is rotated - the two are quite close, and yes that jack will not tolerate a lot of lateral motion before failing. I just though of a 'cure', wire up a short extension with flexible wire (buy a short headphone extension cord and cut about 4 inches from the jack end), and then wire a right angle 3.5mm plug (such as Mouser 171-3308-EX) to the end that will plug into the K2. 73, Don W3FPR _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
|
|
In reply to this post by Darwin, Keith
Kieth,
Certainly one could mount a headphone jack on the back panel - right next to the extenal speaker jack, but if you want to wire in the resistors and capacitors and still have the ability to use either a mono or stereo jack, then the switch that removes the speaker cannot be the normal type switch - if you examine the headphone jack on the schematic and compare it with the schematic of a normal jack with a switch you will be able to see what I am referring to - the resistors cannot be in series with the speaker, but are good to have in series with the headphones. 73, Don W3FPR > -----Original Message----- > > Could the headphone jack be remote? Could a jack be mounted to the back > panel and wired to the headphone jack pads on the circuit board? > > That would open up the possibility of using some more robust open frame > switchcraft shorting jacks. > > - Keith - > No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.430 / Virus Database: 268.15.2/559 - Release Date: 11/30/2006 5:07 AM _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
|
|
In reply to this post by CTMorton
I just put some pictures of a failed K2 headphone jack on my web page,
with a brief explanation of what I think happens. They can be seen here: http://www3.ns.sympatico.ca/ppike/k2jack.html 73, Paul -ve1dy- On 11/30/06, TMorton <[hidden email]> wrote: >We > changed headsets and that did not mute the speaker. I vaguely remember > reading on the reflector about this before. _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
«
Return to Elecraft
|
1 view|%1 views
| Free forum by Nabble | Edit this page |