[Elecraft] KX3 Field Ant. for 80/40/30

[Bill Frantz]

A useful post Erik.

Also useful is the "pseudo end-fed" design that K9YC shows on 
<http://k9yc.com/VerticalHeight.pdf> starting at page 70. This 
design is really a center fed dipole using the outside of the 
feed line coax as one half of the dipole and an extension of the 
center conductor as the other. The RF-electrical length of the 
feed line outside is controlled by a common-mode choke on the 
feed line.

I built one of these for 30 meters and found that the best 
tuning occured when the coax shield between the common-mode 
choke and the "center" feed location was slightly shorter than 
the other half of the dipole.

73 Bill AE6JV

On 11/19/17 at 12:22 AM, ebasilier at cox.net (Erik Basilier) wrote:

>End-fed antennas have gotten popular lately. When I look closer I see two
>different popular approaches.

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