K2 s/n 4276 Output Power Instability

[Ed Muns, W0YK]

> Wonder which call letters I should be keeping an ear out for
> in Sweepstakes...
>
> If your K3 will be active, please let us know...

s/n 00011 & 00017 as K6YT (W0YK op.)

73,
Ed - W0YK

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[Doug Faunt N6TQS [phone]]

After a trip back to the Elecraft factory by motorcycle, #22 will
finally be on the air for SSB SS.  Be gentle, I hate 'phone.

73, doug

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[Greg - AB7R]

I don't have my second one yet...but number 0009 will be on the air.  Have
fun Ed.  Will listen for you.

73
Greg
AB7R


-----Original Message-----
From: [hidden email]
[mailto:[hidden email]]On Behalf Of Ed Muns
Sent: Saturday, November 17, 2007 9:33 AM
To: [hidden email]
Cc: [hidden email]
Subject: RE: [Elecraft] Who will be running a K3 in SS today/tomorrow?


> Wonder which call letters I should be keeping an ear out for
> in Sweepstakes...
>
> If your K3 will be active, please let us know...

s/n 00011 & 00017 as K6YT (W0YK op.)

73,
Ed - W0YK

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[dj7mgq]

#00067 will not be finished in time...

But should be up and running for CQWW.

Enjoy!


vy 73 de toby
--
DD5FZ (ex 4n6fz, dj7mgq, dg5mgq, dd5fz)
K2/10  #885
K2/100 #3248
K3/100 #67 (first 12V test passed)
DOK C12, BCC, DL-QRP-AG
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[AJSOENKE]

In a message dated 11/17/2007 7:29:19 A.M.  Pacific Standard Time,
[hidden email] writes:

Wonder which call  letters I should be keeping an ear out for in
Sweepstakes...

If your K3  will be active, please let us know...

Thanks!

John  K7FD
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K3 sn0031 will be running off on  as call sign K6DDO (alternate call  sign of
Channel Islands ARC), WA6VNN (my Call), and KF6DZP ( YL's Call  )

73 Al




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[w6jd]

I've been playing "hunt and pounce" sporadically on SS with K3 #23.
Unlike most VOX the one on the K3 is a pleasure to use and the
roofing filter (2.7 kHz) + DSP really does a lot to clean up the
band, however it doesn't get rid of all the splatter and over driven
rigs  8>(

Doug
W6JD K2 1626, K3 23
-------------- Original message --------------
From: [hidden email]

> In a message dated 11/17/2007 7:29:19 A.M. Pacific Standard Time,
> [hidden email] writes:
>
> Wonder which call letters I should be keeping an ear out for in
> Sweepstakes...
>
> If your K3 will be active, please let us know...
>
> Thanks!
>
> John K7FD
> _______________________________________________
> 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_ (http://www.elecraft.com)
>
>
> K3 sn0031 will be running off on as call sign K6DDO (alternate call sign of
> Channel Islands ARC), WA6VNN (my Call), and KF6DZP ( YL's Call )
>
> 73 Al
>
>
>
>
> ************************************** See what's new at http://www.aol.com 
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
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>
> Help: http://mailman.qth.net/subscribers.htm 
> Elecraft web page: http://www.elecraft.com 

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[Greg - AB7R]

Tnx for the Q Matt!

Greg
AB7R


-----Original Message-----
From: [hidden email]
[mailto:[hidden email]]On Behalf Of Matt Zilmer
Sent: Saturday, November 17, 2007 7:46 AM
To: [hidden email]
Cc: [hidden email]
Subject: Re: [Elecraft] Who will be running a K3 in SS today/tomorrow?


K3 s/n 24
WA6EGJ

matt


On Sat, 17 Nov 2007 07:27:44 -0800, you wrote:

>
>Wonder which call letters I should be keeping an ear out for in
Sweepstakes...

>
>If your K3 will be active, please let us know...
>
>Thanks!
>
>John K7FD
>_______________________________________________
>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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[Steve Kallal]

OK, I know this thread is over two weeks old, but I have to chime in.

I have two of the 275 watt Johnson Matchboxes. One needs repairing right
now. I think the 80 meter switching is defective.

I borrowed an idea from a review on eham.net. The Matchbox doesn't do well
with low impedances. The reviewer said to use a toriodal Un-Un to step down
the impedance. And it works! A toroid at the input doesn't suffer from the
disadvantages that the toroid on the output as a balun does. It will always
see a non-reactive load when you tune the Matchbox. The only real downside
is the extra gadget hanging off of the Matchbox with coax leads.

Another idea is to move the tap on the input link closer to the grounded
end. I moved it down a couple of turns. My delta loop with balanced feeders,
wouldn't tune on 80 without the Un-Un mentioned above. Moving the tap down a
couple of turns did trick.

It is too bad the link coupled tuners aren't made anymore. Yes MFJ makes the
974H. I have it and it does match well on all frequencies. But the small
knobs are touching to work it on some loads. Also the review in 9/2004 QST
showed to 974H not to be as efficient on the lower bands on lower
impedances. The Matchbox showed real high efficiency. The Un-Un might reduce
the efficiency a little, but it is way better than an output balun. Moving
the input coil tap is probably the most efficient of all.

I hope this info helps some of those how have a Matchbox, but are frustrated
by the limited tuning range.

73,

Steve N6VL
K2 #2289

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Goody K3NG
Sent: Thursday, November 15, 2007 11:00 AM
To: Elecraft List
Subject: Re: [Elecraft] KAT100 with Ladder Line

Using any balun with an unbalanced tuner to feed balanced line can be bad
news (your mileage may vary, standard disclaimers apply).  Under highly
reactive loads, a balun used like this can become quite lossy.  
There's a couple articles in publications and on the Internet on this, but
Cebik's article is one that comes to mind (
http://www.cebik.com/link/l-bal.html ).  It's better to run a real balanced
tuner like a Johnson Matchbox, the MFJ Balanced Line tuner, or others, if
you can.


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