Fw: Re: how to optimize end-fed?

[riese-k3djc]

some years ago the arrl handbook had a Series Parallel Capacitor tuner
which matches my 1/2 wave 75 meter wire,,, makes, for me, a good 1000
mile antenna and when the band is open works DX as well
used to match the antenna at the end wit coils etc but the SPC has
replaced all that
with a 50 Ft run of coax to the antenna end
the tuner can be a problem to find the sweet spot but it doesnt change
once found


Bob


Subject: Re: [Elecraft] how to optimize end-fed?
>

Holger,

There are many answers to your questions.  You will have to get more
specific about the wire lengths and the band(s) of operation for
specific answers.

If you want an easy antenna that will work for 40 thru 10 meters with no
feedline, download the KXAT1 manual from Elecraft and look at page 10.  
It is just two wires and a BNC to binding post adapter, you can't get
much simpler than that.

If you just want to experiment with antennas, feedlines and matching
networks, do it with some education - get the ARRL Handbook and the ARRL
Antenna Book ans spend some time studying while doing your experiments.

73,
Don W3FPR

On 9/30/2016 2:24 AM, Holger Schurig wrote:

> Fred Jensen <[hidden email]> writes:
>
>> How long is the wire?
>> What band?
> Who knowns?  I'm not asking for a *specific* optimization, I'm asking
> for a general rule of thumb.
>
> I'm not talking about a permanent installation, I'm talking about going
> to some field, or hill. I don't know the band in advance, I don't know
> the propagation conditions. And I have several lengths of wire with me,
> I can adjust the wire length. And given the circumstances of the
> location, even the layout of my wire (only on fiber glass post, between
> tree and fiber glass post, etc) will change (e.g. sloper, vertical,
> etc). Even the high will be undefined and/or changeable.
>
> That is actually to fun (for me): to change things and try out.
>
>

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