There is a terminology issue, Charlie. The "EFHW"
I use is this one:
http://www.earchi.org/92011endfedfiles/Endfed6_40.pdf
and is fed via a 9:1 UN-UN. Uses the coax shield
as a counterpoise and seems to work well over the
bands of interest -- depending on the length of
wire used. An ATU is generally essential, and the
one in the KX2 is very capable.
Phil W7OX
On 7/15/16 5:34 AM, Charlie T, K3ICH wrote:
One other question I have concerns the length of these "EFHW" antennas that
many are using.
That is, are they REALLY End Fed Half-Waves? In other words, are they cut
to be an electrical half wave-length or, are they simply a convenient
length of wire, that is fed at one end?
There could be a drastic difference in the feed point impedance depending
on this parameter.
Also, what's wrong with making a true "Zepp" antenna on the higher bands by
adding the required length of twin lead for the ¼λ matching section? On
20 M and up, this would result in a fairly easy length of wire to deal with.
Anybody tried that approach? I know the "J-Poles" are popular on VHF, but
how about a 20 meter wire J-Pole?
73, Charlie k3ICH
-----Original Message-----
From: Elecraft [mailto:[email protected]] On Behalf Of Jim
Brown
Sent: Thursday, July 14, 2016 11:42 PM
To: [email protected]
Subject: Re: [Elecraft] Elecraft] KX2
On Thu,7/14/2016 2:54 PM, Fred C. Jensen wrote:
I use an EFHW on 80-10, no dedicated counterpoise, no coax length rqmts.
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