[BVARC] End fed sloper
Rick Hiller
rickhiller73 at gmail.com
Wed Aug 21 08:08:03 CDT 2024
Marvin,
"End Fed" pretty much locks you into the EFHW arena. Halfwave wire
oriented at about 45 degrees with the feed point at the ground. Easily
made (ARRL kit for 40) and deployed.
In the traditional sense, a "half sloper" was typically a 1/4 wl wire fed
against a 1/4 wl tower, with variations of that being quite prevalent, with
varying results ranging from great to not worth a s%&*.....but most being
quite finicky to get working properly, with minimal advantages attained. .
Those designs, with comments as just stated, can be found in the ARRL
Antenna Handbook, going back to last century or check out ON4UN's "Low Band
DX'ing" comments re: half slopers and sloping dipoles.
Within the last 10 years the low cost, easy up, multi-band EFHW popularity
has taken hold and can be deployed as whatever you wish it to
be....horizontal, L, vertical, sloper, zig-zag, etc.
GL and 73...W5RH
On Wed, Aug 21, 2024 at 7:41 AM mark janzer via BVARC <bvarc at bvarc.org>
wrote:
> Also, check out:
>
> https://www.earchi.org/92011endfedfiles/Endfed6_40.pdf
>
> On Wednesday, August 21, 2024 at 07:23:20 AM CDT, David Holden via BVARC <
> bvarc at bvarc.org> wrote:
>
>
> If you are trying to build an end feed half wave (EFHW) antenna, the
> length is in the name. A half wave at 40m is ~66 feet. Start with 67 feet
> and fold back the end until you get a good SWR. You need a 49:1
> transformer on one end to get the impedance down to 50 ohm and to connect
> your coax. Mine is resonant at 10 through 40m.
>
> David WJ9O
>
>
> > On Aug 20, 2024, at 11:54 PM, Suggs, Marvin (KTRK-TV) via BVARC <
> bvarc at bvarc.org> wrote:
> >
> > Hey everybody
> > I’m looking for a diagram and dimensions for a 40 meter end fed sloper
> antenna. Not having much luck on YouTube.
> > Thanks
> > Marvin
> > N5RKW
> > Sent from my iPhone
> > ________________________________________________
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>
>
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--
Rick Hiller W5RH
*e-mail: rickhiller73 at gmail.com <rickhiller73 at gmail.com>*
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