[Elecraft] K2 - KAT2 Tuner and Alpha Delta DX-EE Dipole

[stan levandowski]

Ken and Brett, thanks for your responses.  It's all helpful.  I have to 
think this through now.

Thanks again,

Stan Levandowski WB2LQF
HF QRP CW -- Doing more with less for over 50 years!
QCWA #35038   OOTC #4558   NAQCC #4740   SKCC #6488   FISTS #14992


On Sun, Sep 19, 2010 at 10:40 PM, Brett Howard wrote:

> The DX-EE isn't going to play all that well on 160 and 80.  I can tune
> it there with the K3's tuner but you don't hear all that much and they
> hear even less of you.
>
> On 40 the DX-EE has a very high Q and you can only get it to actually 
> be
> "ok" at a very small section of the band.  Beyond that you can expect
> some pretty low return loss figures.  Nothing that the tuner can't 
> make
> look reasonable to the radio but you're starting to get toward the 
> same
> performance that you'd see on 160 and 80.
>
> The antenna does pretty well on 20, 15 and 10 and can be tuned to work
> on the WARC bands.
> I know it'll get stripped off when I send this to the reflector but 
> I'm
> attaching some plots of the DX-EE.
>
> SWR WIDE is an SWR plot from 2Mhz to 60Mhz (not sure why I started so
> high but it doesn't matter).  I have this same plot showing return 
> loss
> but most hams are more familiar with SWR so I send that one.  I
> personally prefer return loss plots.
> I'm also attaching a smith chart of the antenna.  The numbered markers
> are on the same frequencies that were shown in the previous plot.
>
> These plots were taken using a $20,000 very recently calibrated 
> Agilent
> VNA with the antenna strung between two trees about 30ft up.  Now I 
> just
> need to go up and tune the antenna to come up into the bands where I
> want them I'm a bit low on each but that just means they are good on 
> the
> CW portions.  I think part of the reason they are about the same 
> amount
> low on every band is because of stretching over time.
>
> Anyway hopefully some of this information helps.
>
> ~Brett (N7MG)
>
>
> On Sun, 2010-09-19 at 21:49 -0400, stan levandowski wrote:
>> I would like to correspond with a K2/KAT2 owner who is actually using 
>> an Alpha-Delta DX-EE dipole.  This is a rather pricey "limited-space" 
>> antenna and would like to hear directly from some "real world" users. 
>> My guess is that there won't be too many of you out there but I 
>> thought I'd ask anyway.
>>
>> My fundamental question: Does the KAT2 get along with the DX-EE on 
>> all bands?
>>
>> 73,
>>
>> Stan Levandowski WB2LQF
>> HF QRP CW -- Doing more with less for over 50 years!
>> QCWA #35038   OOTC #4558   NAQCC #4740   SKCC #6488   FISTS #14992
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