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KX3: LNRPrecision EndFedz EF-10/20/40KMII Antenna SWR tuning

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Esquer Dave

KX3: LNRPrecision EndFedz EF-10/20/40KMII Antenna SWR tuning

Newbie KX3 owner ALERT
LNR Precision EndFedz EF-10/20/40KMII Antenna SWR tuning help needed (kind, constructive, helpful discussions/words please)!

Measured SWR (2 measurements at 2 different times of the day)
Mhz At SO-239 after 26' coax after 41' coax run
7.0 1.35 1.1 1.0
7.125 4.0 2.5 1.5
7.3 10.0 6.0 2.0

14.0 1.5 1.2 1.5
14.15 1.25 1.1 1.5
14.35 1.1 1.1 1.6

28.0 1.8 1.7 1.6
28.3 2.0 1.8 1.7
29.0 3.5 2.5 3.0
29.7 3.9 4.0 4.2

My ideal shack location is with the 26' of coax, the 41' is secondary outside location (fair weather).

What should I do for the 40 and 10 meter wavelengths to tune? I think I leave the 20 meter portion alone? Once the 20 meter is tuned, the 10 meter falls into place supposedly but …
Why do my values vary so much? I sort of see a pattern. I want to physically tune the antenna and not rely on the internal Elecraft ATU. I want to maximize my QRP.

Inverted L configuration with 2/3 vertical and 1/3 horizontal.

Equipment:
LNRPrecision EndFedz EF-10/20/40KMII Antenna
Elecraft KX3, ATU installed but disabled (not bypassed).
LMR240UF for all coax
MFJ870 Grandmaster SWR meter
All frequencies tuned using FM option at 5 watts
I don't have an antenna analyzer, yet.

Just like in woodshop, measure twice, cut once! Again, NEWBIE advice much appreciated.

TIA,
Dave, K6WDE

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ny4g

Re: KX3: LNRPrecision EndFedz EF-10/20/40KMII Antenna SWR tuning

Dave,

If you are primarily a CW op then you are not going to grt much better. If you.operate mostly. SSB them you may want to shorten it. If you want to split the difference then you have shorten it less than if you were optimize it for phone. LNR does not recommend using a tuner although i use one anyway. I have one of those as well and used it on a trip to Belgium. Since then i made my own matchbox with a bigger inductor to handle more power. I use 45 feet of wire and i tune it for all bands from 80 to 10 using the KX3 tuner. You will be happy with a Par antenna as well. Just do not put more than 25 watts through it. You will burn up the matchbox if you do.

Ariel NY4G

Sent from my iPhone

On Jul 9, 2013, at 12:52 AM, "Esquer Dave" <[hidden email]> wrote:

> Newbie KX3 owner ALERT
> LNR Precision EndFedz EF-10/20/40KMII Antenna SWR tuning help needed (kind, constructive, helpful discussions/words please)!
>
> Measured SWR (2 measurements at 2 different times of the day)
> Mhz At SO-239 after 26' coax after 41' coax run
> 7.0 1.35 1.1 1.0
> 7.125 4.0 2.5 1.5
> 7.3 10.0 6.0 2.0
>
> 14.0 1.5 1.2 1.5
> 14.15 1.25 1.1 1.5
> 14.35 1.1 1.1 1.6
>
> 28.0 1.8 1.7 1.6
> 28.3 2.0 1.8 1.7
> 29.0 3.5 2.5 3.0
> 29.7 3.9 4.0 4.2
>
> My ideal shack location is with the 26' of coax, the 41' is secondary outside location (fair weather).
>
> What should I do for the 40 and 10 meter wavelengths to tune? I think I leave the 20 meter portion alone? Once the 20 meter is tuned, the 10 meter falls into place supposedly but …
> Why do my values vary so much? I sort of see a pattern. I want to physically tune the antenna and not rely on the internal Elecraft ATU. I want to maximize my QRP.
>
> Inverted L configuration with 2/3 vertical and 1/3 horizontal.
>
> Equipment:
> LNRPrecision EndFedz EF-10/20/40KMII Antenna
> Elecraft KX3, ATU installed but disabled (not bypassed).
> LMR240UF for all coax
> MFJ870 Grandmaster SWR meter
> All frequencies tuned using FM option at 5 watts
> I don't have an antenna analyzer, yet.
>
> Just like in woodshop, measure twice, cut once! Again, NEWBIE advice much appreciated.
>
> TIA,
> Dave, K6WDE
>
>
>
>
>
> ______________________________________________________________
> 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

Fred Smith-2

Re: KX3: LNRPrecision EndFedz EF-10/20/40KMII Antenna SWR tuning

I have one also about all I can add is to cut very little off at a time till you get it where you want it. The antenna works FB with my KX3 without any tuner used after trimming.

73,
Fred/N0AZZ
K3 Ser # 6730--KX3 # 2573--K2/100 # 6470-KAT100
P3/SVGA--KPA500--KAT500--W2

-----Original Message-----
From: [hidden email] [mailto:[hidden email]] On Behalf Of Ariel Jacala
Sent: Tuesday, July 09, 2013 5:12 AM
To: Esquer Dave
Cc: [hidden email]
Subject: Re: [Elecraft] KX3: LNRPrecision EndFedz EF-10/20/40KMII Antenna SWR tuning

Dave,

If you are primarily a CW op then you are not going to grt much better. If you.operate mostly. SSB them you may want to shorten it. If you want to split the difference then you have shorten it less than if you were optimize it for phone. LNR does not recommend using a tuner although i use one anyway. I have one of those as well and used it on a trip to Belgium. Since then i made my own matchbox with a bigger inductor to handle more power. I use 45 feet of wire and i tune it for all bands from 80 to 10 using the KX3 tuner. You will be happy with a Par antenna as well. Just do not put more than 25 watts through it. You will burn up the matchbox if you do.

Ariel NY4G

Sent from my iPhone

On Jul 9, 2013, at 12:52 AM, "Esquer Dave" <[hidden email]> wrote:

> Newbie KX3 owner ALERT
> LNR Precision EndFedz EF-10/20/40KMII Antenna SWR tuning help needed (kind, constructive, helpful discussions/words please)!
>
> Measured SWR (2 measurements at 2 different times of the day)
> Mhz At SO-239 after 26' coax after 41' coax run
> 7.0 1.35 1.1 1.0
> 7.125 4.0 2.5 1.5
> 7.3 10.0 6.0 2.0
>
> 14.0 1.5 1.2 1.5
> 14.15 1.25 1.1 1.5
> 14.35 1.1 1.1 1.6
>
> 28.0 1.8 1.7 1.6
> 28.3 2.0 1.8 1.7
> 29.0 3.5 2.5 3.0
> 29.7 3.9 4.0 4.2
>
> My ideal shack location is with the 26' of coax, the 41' is secondary outside location (fair weather).
>
> What should I do for the 40 and 10 meter wavelengths to tune? I think
> I leave the 20 meter portion alone? Once the 20 meter is tuned, the 10 meter falls into place supposedly but … Why do my values vary so much? I sort of see a pattern. I want to physically tune the antenna and not rely on the internal Elecraft ATU. I want to maximize my QRP.
>
> Inverted L configuration with 2/3 vertical and 1/3 horizontal.
>
> Equipment:
> LNRPrecision EndFedz EF-10/20/40KMII Antenna Elecraft KX3, ATU
> installed but disabled (not bypassed).
> LMR240UF for all coax
> MFJ870 Grandmaster SWR meter
> All frequencies tuned using FM option at 5 watts I don't have an
> antenna analyzer, yet.
>
> Just like in woodshop, measure twice, cut once! Again, NEWBIE advice much appreciated.
>
> TIA,
> Dave, K6WDE
>
>
>
>
>
> ______________________________________________________________
> 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

______________________________________________________________
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
-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.2904 / Virus Database: 3204/6475 - Release Date: 07/08/13

______________________________________________________________
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

Tighe Kuykendall

Re: KX3: LNRPrecision EndFedz EF-10/20/40KMII Antenna SWR tuning

Agreed, little snips at a time. Mine works FB as well. Used it last weekend with a 31' fiberglass push-up pole.

Tighe

Sent from my iPhone

On Jul 9, 2013, at 7:16 AM, "Fred Smith" <[hidden email]> wrote:

> I have one also about all I can add is to cut very little off at a time till you get it where you want it. The antenna works FB with my KX3 without any tuner used after trimming.
>
>
> 73,
> Fred/N0AZZ
> K3 Ser # 6730--KX3 # 2573--K2/100 # 6470-KAT100
> P3/SVGA--KPA500--KAT500--W2
>
>
>
>
> -----Original Message-----
> From: [hidden email] [mailto:[hidden email]] On Behalf Of Ariel Jacala
> Sent: Tuesday, July 09, 2013 5:12 AM
> To: Esquer Dave
> Cc: [hidden email]
> Subject: Re: [Elecraft] KX3: LNRPrecision EndFedz EF-10/20/40KMII Antenna SWR tuning
>
> Dave,
>
> If you are primarily a CW op then you are not going to grt much better. If you.operate mostly. SSB them you may want to shorten it. If you want to split the difference then you have shorten it less than if you were optimize it for phone. LNR does not recommend using a tuner although i use one anyway. I have one of those as well and used it on a trip to Belgium. Since then i made my own matchbox with a bigger inductor to handle more power. I use 45 feet of wire and i tune it for all bands from 80 to 10 using the KX3 tuner. You will be happy with a Par antenna as well. Just do not put more than 25 watts through it. You will burn up the matchbox if you do.
>
> Ariel NY4G
>
> Sent from my iPhone
>
> On Jul 9, 2013, at 12:52 AM, "Esquer Dave" <[hidden email]> wrote:
>
>> Newbie KX3 owner ALERT
>> LNR Precision EndFedz EF-10/20/40KMII Antenna SWR tuning help needed (kind, constructive, helpful discussions/words please)!
>>
>> Measured SWR (2 measurements at 2 different times of the day)
>> Mhz At SO-239 after 26' coax after 41' coax run
>> 7.0 1.35 1.1 1.0
>> 7.125 4.0 2.5 1.5
>> 7.3 10.0 6.0 2.0
>>
>> 14.0 1.5 1.2 1.5
>> 14.15 1.25 1.1 1.5
>> 14.35 1.1 1.1 1.6
>>
>> 28.0 1.8 1.7 1.6
>> 28.3 2.0 1.8 1.7
>> 29.0 3.5 2.5 3.0
>> 29.7 3.9 4.0 4.2
>>
>> My ideal shack location is with the 26' of coax, the 41' is secondary outside location (fair weather).
>>
>> What should I do for the 40 and 10 meter wavelengths to tune? I think
>> I leave the 20 meter portion alone? Once the 20 meter is tuned, the 10 meter falls into place supposedly but … Why do my values vary so much? I sort of see a pattern. I want to physically tune the antenna and not rely on the internal Elecraft ATU. I want to maximize my QRP.
>>
>> Inverted L configuration with 2/3 vertical and 1/3 horizontal.
>>
>> Equipment:
>> LNRPrecision EndFedz EF-10/20/40KMII Antenna Elecraft KX3, ATU
>> installed but disabled (not bypassed).
>> LMR240UF for all coax
>> MFJ870 Grandmaster SWR meter
>> All frequencies tuned using FM option at 5 watts I don't have an
>> antenna analyzer, yet.
>>
>> Just like in woodshop, measure twice, cut once! Again, NEWBIE advice much appreciated.
>>
>> TIA,
>> Dave, K6WDE
>>
>>
>>
>>
>>
>> ______________________________________________________________
>> 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
> ______________________________________________________________
> 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
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2013.0.2904 / Virus Database: 3204/6475 - Release Date: 07/08/13
>
> ______________________________________________________________
> 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

Joseph Trombino, Jr

Re: KX3: LNRPrecision EndFedz EF-10/20/40KMII Antenna SWR tuning

I've trimmed several PAR EFHW antennas over the past few years and don't cut anymore...I just fold the wire back on itself essentially shortening or lengthening the wire until I hit the sweet spot.

Saves some heartburn if you make a mistake and "take a little too much off of the top" (grin).

73, Joe W2KJ
I QRP, therefore I am

On Jul 10, 2013, at 7:26 PM, Tighe Kiykendall wrote:

> Agreed, little snips at a time. Mine works FB as well. Used it last weekend with a 31' fiberglass push-up pole.
>
> Tighe
>
>
> Sent from my iPhone
>
> On Jul 9, 2013, at 7:16 AM, "Fred Smith" <[hidden email]> wrote:
>
>> I have one also about all I can add is to cut very little off at a time till you get it where you want it. The antenna works FB with my KX3 without any tuner used after trimming.
>>
>>
>> 73,
>> Fred/N0AZZ
>> K3 Ser # 6730--KX3 # 2573--K2/100 # 6470-KAT100
>> P3/SVGA--KPA500--KAT500--W2
>>