[Elecraft] High SWR problem

Mon Aug 18 15:58:00 2003

Also, Edward, get your end-fed long wire going properly before worrying 
about a dipole.  Ultimately a dipole is a wonderful antenna, but to do it 
properly for multiband use requires a properly balanced antenna tuner 
(transmatch) and open-wire feed.  This is all very doable -- but its going 
to be much easier for you to make a proper end-fed wire out of your current 
situation than giving up and trying something new.

best wishes,

dave belsley, w1euy

--On Monday, August 18, 2003 8:22 PM +0100 Edward Kenworthy 
<[email protected]> wrote:

>
> I know - had a brainstorm, meant to write Garden.
>
> Anyway, mystery solved. Without making any changes have managed to tune
> 3.5, 21, 24, 28 and 50MHz which can't be bad for a piece of copper wire
> and a crappy earth !
>
> And the SWR on 3.5 is the worst at about 1:2 (is that the right way
> around?) and best on 24 and 28MHz where there's almost no reflected
> power. 50MHz is about the same as 3.5MHz. The rest are completely seem to
> be un-tunable.
>
> So overall am pleased and thanks for everyone's input.
>
> One last question - would a dipole be as flexible and give better results
> ? Is there an alternative to a beam on HF that would better a long wire or
> dipole ?
>
> Thanks again !
>
> Edward
>
>
> On 18/8/03 2:58 pm, "Hank Kohl K8DD" <[email protected]> wrote:
>
>> At 8/18/2003 07:43 AM +0100, Edward Kenworthy wrote:
>>
>>> Transmitter --(coax)-- atu with swr meter --(coax)-- balun -- 20m of
>>> copper running down the guardian.
>>
>> guardian?      What's that?
>>
>>
>>
>>> There's an earth connector on the atu and the braid leading to the
>>> earth rod is attached to that. The coax running from the longwire is
>>> attached to a balun at the antenna end, and to a coax connector on the
>>> atu.
>>>
>>> Not sure what type of balun it is - I bought the longwire ready-made
>>> with balun attached.
>>
>> Aha .... ready-made .... what brand of ready-made, manufacturer, ?
>>
>> 73    Hank    K8DD
>>
>>
>>
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----------------------------------
David A. Belsley
Professor of Economics