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Multiband end-fed dipole with KX1

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PGSchreier

Multiband end-fed dipole with KX1

Hi gang,

I would like to find a 40/30/20 meter end-fed dipole I can run with my
KX1 and its tuner. (I'm not crazy about linked dipoles for a number of
reasons.)

Are you familiar with any end-fed design that will handle all three
bands well?

For instance, does anyone have any experience with the EndFed 40-6m
Antenna from W1SFR?
http://kx3helper.com/endfed-40-6m-antenna/

Thanks for any tips!
Paul AA1MI / HB9DST
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Jack Chomley

Re: Multiband end-fed dipole with KX1

Paul,

I have one of these up at present........the 5 band model.
Works well but.......is expensive, they do have a 3 band QRP one, amongst others.

http://hyendfedantenna.nl/joomla/purchase.html

73,

Jack VK4JRC

Club. www.cqara.org.au
Member WIA SARL ARRL
GQRP #14392
QRPARCI #15068
VKQRP. #833

> On 22 Feb 2014, at 8:59 pm, PGSchreier <[hidden email]> wrote:
>
> Hi gang,
>
> I would like to find a 40/30/20 meter end-fed dipole I can run with my KX1 and its tuner. (I'm not crazy about linked dipoles for a number of reasons.)
>
> Are you familiar with any end-fed design that will handle all three bands well?
>
> For instance, does anyone have any experience with the EndFed 40-6m Antenna from W1SFR?
> http://kx3helper.com/endfed-40-6m-antenna/
>
> Thanks for any tips!
> Paul AA1MI / HB9DST
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

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PGSchreier

Re: Multiband end-fed dipole with KX1

Hi Jack,

Unfortunately, none of these models supports 30 meters.

73
Paul

> Paul,
>
> I have one of these up at present........the 5 band model.
> Works well but.......is expensive, they do have a 3 band QRP one, amongst others.
>
> http://hyendfedantenna.nl/joomla/purchase.html
>
> 73,
>
> Jack VK4JRC
>
> Club. www.cqara.org.au
> Member WIA SARL ARRL
> GQRP #14392
> QRPARCI #15068
> VKQRP. #833
>
>

ny4g

Re: Multiband end-fed dipole with KX1

In reply to this post by PGSchreier

Paul,
I run an EARCHI Matchbox with 44 feet of wire. It is resonant on 20m (no tuner) and the SWR is below 3.5:1 for the frequencies between 7 MHz and 25 MHz so you can tune 40-12m. I have no problem tuning it with my KX3 ATU. I am not sure the KX1 ATU will handle it but I am thinking it does. The EARCHI matchbox is good up to 100 watts - so it is both versatile and robust. I have gone to this antenna instead of the PAR 40-20-10. It also tunes 30m and has been my go to antenna for 30m for a long time at my QTH. It cost $35 to build with a kit from EARCHI and takes about 10 minutes.
Ariel NY4G

> Date: Sat, 22 Feb 2014 11:59:41 +0100
> From: [hidden email]
> To: [hidden email]
> Subject: [Elecraft] Multiband end-fed dipole with KX1
>
> Hi gang,
>
> I would like to find a 40/30/20 meter end-fed dipole I can run with my
> KX1 and its tuner. (I'm not crazy about linked dipoles for a number of
> reasons.)
>
> Are you familiar with any end-fed design that will handle all three
> bands well?
>
> For instance, does anyone have any experience with the EndFed 40-6m
> Antenna from W1SFR?
> http://kx3helper.com/endfed-40-6m-antenna/
>
> Thanks for any tips!
> Paul AA1MI / HB9DST
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

Jack Chomley

Re: Multiband end-fed dipole with KX1

In reply to this post by PGSchreier

Paul,

I also use these for portable work, you may need to carry a couple of antennas, or make up some half wave length wires for bands other than 10/20/40. On their QRP antenna you remove the tri-band wire and put on the wire of your choice, to work other bands.
Won't go to 80 metres though.......

http://www.lnrprecision.com/endfedz-specs/

73,

Jack VK4JRC

Club. www.cqara.org.au
Member WIA SARL ARRL
GQRP #14392
QRPARCI #15068
VKQRP. #833

> On 22 Feb 2014, at 9:11 pm, PGSchreier <[hidden email]> wrote:
>
> Hi Jack,
>
> Unfortunately, none of these models supports 30 meters.
>
> 73
> Paul
>
>> Paul,
>>
>> I have one of these up at present........the 5 band model.
>> Works well but.......is expensive, they do have a 3 band QRP one, amongst others.
>>
>> http://hyendfedantenna.nl/joomla/purchase.html
>>
>> 73,
>>
>> Jack VK4JRC
>>
>> Club. www.cqara.org.au
>> Member WIA SARL ARRL
>> GQRP #14392
>> QRPARCI #15068
>> VKQRP. #833
>

Tom McCulloch

Re: Multiband end-fed dipole with KX1

In reply to this post by PGSchreier

Paul,

Here's a radio club in Hawaii that was selling a kit for end feds :

http://www.earchi.org/92011endfedfiles/Endfed6_40.pdf

You also can roll your own easy enough, but the transformers carry a lot
a voltage so beware.
Try these site:
http://www.aa5tb.com/efha.html

http://www.w8ji.com/end-fed_1_2_wave_matching_system_end%20feed.htm

http://betterqrp.com/page5.php

http://www.parelectronics.com/end-fedz.php

GL
Tom WB2QDG
K2 1103

Oh Wow. Oh Wow. Oh Wow.

--- Steve Jobs October 5, 2011

On 2/22/2014 5:59 AM, PGSchreier wrote:

> Hi gang,
>
> I would like to find a 40/30/20 meter end-fed dipole I can run with my
> KX1 and its tuner. (I'm not crazy about linked dipoles for a number of
> reasons.)
>
> Are you familiar with any end-fed design that will handle all three
> bands well?
>
> For instance, does anyone have any experience with the EndFed 40-6m
> Antenna from W1SFR?
> http://kx3helper.com/endfed-40-6m-antenna/
>
> Thanks for any tips!
> Paul AA1MI / HB9DST
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

Gio

Re: Multiband end-fed dipole with KX1

In reply to this post by PGSchreier

Good Day Paul,

My first rig was a KX1 and I ran an end-fed wire (34' as I recall) with
three counterpoises. It worked on 20, 30, and 40 quite well. It wouldn't
load on 80, but I made QSOs with it anyway. A year or so later I bought a
KX3 and ran the same antenna with good results. Then about 6 months ago, I
bought the EARCHI EFHW. I'm using the suggested setup--30' wire to the
matchbox with 25' of coax.The KX3 loves it and it loads 6 though 80 FB--160
not so well. The only drawback is the counterpoise.

Just for grins I took out the trusty KX1 and tried it on the EARCHI, The AT
didn't like it. SWL was 2.0 where with it was 1.0--1.3 consistently with
the simple wire-counterpoise setup. So, maybe I need to lengthen the wire
as another poster noted.

Just FYI see http://www.sotabeams.co.uk/efhw/ for a discussion of EFHW.

72

John K4ARQ

On Sat, Feb 22, 2014 at 5:59 AM, PGSchreier <[hidden email]>wrote:

> Hi gang,
>
> I would like to find a 40/30/20 meter end-fed dipole I can run with my KX1
> and its tuner. (I'm not crazy about linked dipoles for a number of reasons.)
>
> Are you familiar with any end-fed design that will handle all three bands
> well?
>
> For instance, does anyone have any experience with the EndFed 40-6m
> Antenna from W1SFR?
> http://kx3helper.com/endfed-40-6m-antenna/
>
> Thanks for any tips!
> Paul AA1MI / HB9DST
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

--
John Flynn
Tallahassee, Florida
USA
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Brian Hunt

Re: Multiband end-fed dipole with KX1

In reply to this post by PGSchreier

I have a home brew 40/30/20 end fed half wave vertical I've used for several years with my K1. 33 ft long and supported with a MFJ fiberglass pole, it has a loading coil 6 ft from each end. 20 m with the coil shorted, 30 m with a tap selected and 40 m with the entire coil in the circuit. You have to haul the antenna down to change bands but that's easy with the MFJ pole.

The tuner is a tuned tank with a 6 turn link tapped on every turn. The coil and link are wound on a 1 in. toroid. It will tune the antenna to 1:1 SWR on all 3 bands. It will handle about 15 watts before it starts to arc. :-)

I can put together the details if interested.

72,
Brian, K0DTJ

> On Feb 22, 2014, at 2:59, PGSchreier <[hidden email]> wrote:
>
> Hi gang,
>
> I would like to find a 40/30/20 meter end-fed dipole I can run with my KX1 and its tuner. (I'm not crazy about linked dipoles for a number of reasons.)
>
> Are you familiar with any end-fed design that will handle all three bands well?
>
> For instance, does anyone have any experience with the EndFed 40-6m Antenna from W1SFR?
> http://kx3helper.com/endfed-40-6m-antenna/
>
> Thanks for any tips!
> Paul AA1MI / HB9DST
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

Jim Brown-10

Re: Multiband end-fed dipole with KX1

In reply to this post by PGSchreier

On 2/22/2014 2:59 AM, PGSchreier wrote:
> I would like to find a 40/30/20 meter end-fed dipole I can run with my
> KX1 and its tuner. (I'm not crazy about linked dipoles for a number of
> reasons.)

I have an excellent design for an end-fed SINGLE BAND half-wave dipole,
but I can't think of a good way to do it for multiple bands. See the
slides near the end of my talk on elevating vertical antennas at
http://k9yc.com/publish.htm You can build it for about $15 for QRP. To
handle 100W, you'll need a bigger ferrite core for the choke that will
raise the cost by about $10.

You can go to the hardware or electrical supply store and buy a spool of
wire, toss a length of it into a tree or tie it to something on your
house, toss another length into another tree or something on your
garage, and load that as an antenna. The tuners in Elecraft rigs will
match antennas like that very well.

> Are you familiar with any end-fed design that will handle all three
> bands well?

No.

>
> For instance, does anyone have any experience with the EndFed 40-6m
> Antenna from W1SFR? http://kx3helper.com/endfed-40-6m-antenna/

This is what we call back home in WV where I grew up "a pig in a poke."
There's nothing on this webpage except testimonials from new hams who
appear to be technically illiterate. When someone tries to sell you
something without telling you what it is, run like hell in the other
direction.

73, Jim K9YC

______________________________________________________________
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Doug Person-3

Re: Multiband end-fed dipole with KX1

I have had success using an End-fedz multi-band antenna for 40 and 20.
The same concept would work to add 30 meters as well. The End-fedz uses
a stub to achieve resonance on 20 and the full length for 40. Another
stub for 30 should work just fine. They are made and sold by PAR
Electronics <http://www.parelectronics.com/end-fedz.php>

I use on regularly on 17 meters and its performance is
indistinguishable from a dipole. PAR Electronics also sells a 3 band
model for 40, 20 & 10. They are well made and reasonably priced.

I bought a bunch of big toroids and I intend to see if I can make some
that will handle the output from the KPA500. That will be a summer project.

Of course, you can build you own for peanuts if you have a suitable
toroid and some wire.

73, Doug -- K0DXV

On 2/22/2014 10:09 AM, Jim Brown wrote:

> On 2/22/2014 2:59 AM, PGSchreier wrote:
>> I would like to find a 40/30/20 meter end-fed dipole I can run with
>> my KX1 and its tuner. (I'm not crazy about linked dipoles for a
>> number of reasons.)
>
> I have an excellent design for an end-fed SINGLE BAND half-wave
> dipole, but I can't think of a good way to do it for multiple bands.
> See the slides near the end of my talk on elevating vertical antennas
> at http://k9yc.com/publish.htm You can build it for about $15 for
> QRP. To handle 100W, you'll need a bigger ferrite core for the choke
> that will raise the cost by about $10.
>
> You can go to the hardware or electrical supply store and buy a spool
> of wire, toss a length of it into a tree or tie it to something on
> your house, toss another length into another tree or something on your
> garage, and load that as an antenna. The tuners in Elecraft rigs will
> match antennas like that very well.
>
>> Are you familiar with any end-fed design that will handle all three
>> bands well?
>
> No.
>
>>
>> For instance, does anyone have any experience with the EndFed 40-6m
>> Antenna from W1SFR? http://kx3helper.com/endfed-40-6m-antenna/
>
> This is what we call back home in WV where I grew up "a pig in a
> poke." There's nothing on this webpage except testimonials from new
> hams who appear to be technically illiterate. When someone tries to
> sell you something without telling you what it is, run like hell in
> the other direction.
>
> 73, Jim K9YC
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>