K2 Phone Jack
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My K2's phone jack has failed for the third time. I've ordered two new jacks, but I am thinking about wiring the internal speaker always on and muting it at the external speaker jack. I'm a little concerned about just opening the internal speaker line without a load for the audio amp. I could just insert a 15 ohm 2 watt resister as the load. Any observations on that approach. Thanks.
Jim, K4ZMV |
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Jim;
I had the same problem with my K1 (same part nr). I just wired the speaker and in parallel with the phone jack. Speaker is on all the time, When headphones are in use the volume control gets turned down. This has worked well for me. I did this about 2 years ago. 73, Ty, W1TF, K1 #1423 --- k4zmv <[hidden email]> wrote: > > My K2's phone jack has failed for the third time. > I've ordered two new > jacks, but I am thinking about wiring the internal > speaker always on and > muting it at the external speaker jack. I'm a > little concerned about just > opening the internal speaker line without a load for > the audio amp. I could > just insert a 15 ohm 2 watt resister as the load. > Any observations on that > approach. Thanks. > > Jim, K4ZMV ____________________________________________________________________________________ Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs _______________________________________________ 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 |
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In reply to this post by Jim K4ZMV
On Tue, 11 Mar 2008 09:41:57 -0700 (PDT), Jim, K4ZMV wrote:
> >My K2's phone jack has failed for the third time. I've ordered two new >jacks, but I am thinking about wiring the internal speaker always on and >muting it at the external speaker jack. I'm a little concerned about just >opening the internal speaker line without a load for the audio amp. I could >just insert a 15 ohm 2 watt resister as the load. Any observations on that >approach. Thanks. > >Jim, K4ZMV When I replaced my headphone jack I took the opportunity to wire in a speaker/headphone switch to the back panel. I leave the headphones plugged in most all of the time now and just use the switch to select between headphones and speaker. That means a lot less wear on the jack. It is a lot more convenient than plugging and unplugging the headphones all the time anyway. 73, Drew AF2Z _______________________________________________ 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 |
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In reply to this post by Jim K4ZMV
Is there an upgradeable fix for this problem? I'm on my 2nd jack and it's going south. BillH w7kxb > Date: Tue, 11 Mar 2008 09:41:57 -0700 > From: [hidden email] > To: [hidden email] > Subject: [Elecraft] K2 Phone Jack > > > My K2's phone jack has failed for the third time. I've ordered two new > jacks, but I am thinking about wiring the internal speaker always on and > muting it at the external speaker jack. I'm a little concerned about just > opening the internal speaker line without a load for the audio amp. I could > just insert a 15 ohm 2 watt resister as the load. Any observations on that > approach. Thanks. > > Jim, K4ZMV _______________________________________________ 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 |
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In reply to this post by Ralph Tyrrell
Thanks for the comments. I solved the dilemma by replacing the phone jack, but hard
wired the switch closed on the PC board. There is audio in the speaker and the headphones regardless of the phone jack status. I built up a small audio amp which I connect to the external speaker jack. If I don't want speaker audio, I turn off the amp. By the way, the amp feeds two speakers on either side of the radio desk which sorta gives me stereo. I notice the K3 has a 1/4" phone jack. And, I have a K3 on order to deliver sometime late June or early July. 73, Jim, K4ZMV, K2 #5731
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After about 5 hour of assembly K3 #513 came to life tonight. Except for being short a few screws everything went together per the manuals. Hopefully I'll have some time tomorrow evening to calibrate and put on the air. Manuel W4SSB _______________________________________________ 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 |
K3 - modification - some ideas
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Hello list,
as I am waiting for my K3/10 I am thinking about some personal modifications. Maybe somebody else has some more detailed ideas and can add some comments. What I am thinking about: as there will be a space inside K3 (not having 100W and ATU unit), what about to - putting small power supply inside (13V/10A) - putting small 28/144MHz 5W transvertor iside all can be non-destructive using replacemnet for blind panel on the place for fans on rear panel, TX/RX cables for transverter can be some BNC jumpers from transverter panel, all other connectors also fitted in "new" rear panel removeing "new" panel and putting back of original one can return K3 to original state if later needed Just ideas.... 73! Lexa, ok1dst _______________________________________________ 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: K3 - modification - some ideas
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Alexandr.... One of the things that surprised me when I built my K3 is how small it really is. I would think you could do some of the modifications with the 10 watt version if you had the power amp shield installed. The physical room is rather small in the radio once you have it built. So, how small can you get the power supply or how small can you get the transverter? The second thing I can think about is how does the proposed modification affect the performance of the K3? I have no answer, but would have to be trial and error. The K3 is not like the K2 where modification was ... well ... encouraged. The K3's design might not lend itself to modifications Lee - K0WA In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any Common Sense, ask for help from somebody who has some Common Sense. Is Common Sense divine? _______________________________________________ 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: K3 - modification - some ideas
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In reply to this post by Alexandr Kobranov
> as I am waiting for my K3/10 I am thinking about some personal
> modifications. Last night, I completed 80% of the K3 assembly in about 3-1/2 hours. Although this is not really a "mod," I did replace the two SO-239 coaxial panel receptacles with Amphenol Teflon types. I am a big proponent of Amphenol connectors and had a few on-hand. I will post a link today with a photo showing the change, and also include the Mouser P/N for anyone wishing to substitute the stock SO-239 with the higher quality Amphenol type. At only $8 for a pair, it really dresses up the rear panel. It's a direct replacement and the mounting holes line-up just fine. Paul, W9AC _______________________________________________ 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 |
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In reply to this post by Manuel Maseda
K3 # 567
Ordered August 3 Now for the fun John, N6AX _______________________________________________ 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 |
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