## Re: [loopantennas] Wellbrook ALA100

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• In a message dated 1/27/2007 12:27:39 A.M. Eastern Standard Time, steveratz@eoni.com writes: Hi Dominique, I probably don t understand your question properly.
Message 1 of 8 , Jan 26, 2007
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In a message dated 1/27/2007 12:27:39 A.M. Eastern Standard Time,
steveratz@... writes:

Hi Dominique,
I probably don't understand your question properly. How can a triangle have
two 90 degree angles?

In the third dimension if you look at one the right way a triangle can have
90º angles.

Eric

[Non-text portions of this message have been removed]
• Hello Dominique, There s nothing wrong with your english as far as I can discover. Putting the ALA100 loop in the horizontal plane, whatever shape it is,
Message 2 of 8 , Jan 27, 2007
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Hello Dominique,
There's nothing wrong with your english as far as I can discover.
Putting the ALA100 loop in the horizontal plane, whatever shape it is, wouldn't that make it omnidirectional by itself?

regards,

Cor Beijersbergen

[Non-text portions of this message have been removed]
• Does looking at it the right way make it a right Triangle?? ;-) /////////////// JHR ////////////// ... way a triangle can have 90º angles.
Message 3 of 8 , Jan 29, 2007
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Does looking at it the "right" way
make it a "right" Triangle??

;-)

/////////////// JHR //////////////

sonicxcove@... wrote:

>
> In the third dimension if you look at one the right
way a triangle can have > 90º angles.
• Actually turning a loop on it s side can be advantageous to null out electrical noise below it, like in a rooftop mounted situation on a home with a lot of RFI
Message 4 of 8 , Jan 29, 2007
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Actually turning a loop on it's side can be advantageous to null out
electrical noise below it, like in a rooftop mounted situation on a
home with a lot of RFI generating devices ...

JR

--- In loopantennas@yahoogroups.com, "D.Kremp" <dominique.kremp@...>
wrote:
>
> Hi,
> I'm just wondering if anybody has tried to install a Wellbrook
ALA100 loop
> (or any other loop) in a 90° vertical configuration, i.e. both
sides of the
> inverted V triangle make a right angle.
> My main interest is monitoring non directionaI beacons in the LW band.
> Is it worth trying ?
> (Hope my bad english is comprehensible !)
>
>
> Dominique Kremp
> Normandy/France
>
• This is not rebuttal or anything of the kind, but just some explanation about the original question that started this thread. Dominique, the original poster of
Message 5 of 8 , Jan 29, 2007
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This is not rebuttal or anything of the kind, but just some explanation
original poster of the message in this thread, responded privately to my
angles. He sent me two diagrams that made it all clear what he was trying to
do. The rear of his garden ("backyard" to us Americans) has a fence around
it, and makes a 90 degree turn. He wanted to put up two poles on both sides
of the right-angle turn, and run a loop so that the wires were in line with
the fence and not crossing over the garden, thus there would be a right
angle to the loop. His center pole would be at the right-angle intersection,
where his Wellbrook ALA100 preamp would be located. There would be a
horizontal component and a partial-vertical component to his loop wires,
making it less directional. (A small vertical loop is quite directional,
particularly when used with the ALA100, which is how my own ALA100 is being
used.) I did not understand what he was trying to do until he sent me the
diagrams--then it was very clear. I also made a small model with a box and
pencils and thin wire, to see how his loop would look in full
three-dimensional view!
I told him that I thought such a loop would work just fine with his ALA100.
Best regards,
Steve AA7U
NE Oregon
----- Original Message -----
From: "Richards" <jruing@...>
To: <loopantennas@yahoogroups.com>
Sent: Monday, January 29, 2007 10:44 AM
Subject: Re: [loopantennas] Wellbrook ALA100

> Does looking at it the "right" way
> make it a "right" Triangle??
>
> ;-)
>
> /////////////// JHR //////////////
>
>
> sonicxcove@... wrote:
>
>>
>> In the third dimension if you look at one the right
> way a triangle can have > 90º angles.
>
>
>
> Post files here. If the file comes from a website, please put it in the
> http://groups.yahoo.com/group/loopantennas/files
>
> You can now view images at higher resolution in Photos. Upload JPG and GIF
> http://ph.groups.yahoo.com/group/loopantennas/photos
>
>
>
>
• Thank you very much Steve for the help and for the comprehensive explanation about my post. I was unable to explain it as clear as you because of my bad
Message 6 of 8 , Jan 29, 2007
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Thank you very much Steve for the help and for the comprehensive explanation
about my post. I was unable to explain it as clear as you because of my bad
english..

Hope everybody will now understand what I meant.

I dropped a line to Andy IKIN who is the "father" of the Wellbrook antennas.
He told me that the antenna should be OK at HF in this configuration but I
should expect a small loss in gain at LF.

But I don't know how many dBs he means when he says "small loss" !

Any clue ?

Thanks again to you Steve !

Dominique

from Normandy/France

_____

De : loopantennas@yahoogroups.com [mailto:loopantennas@yahoogroups.com] De
la part de Steve Ratzlaff
Envoyé : lundi 29 janvier 2007 20:37
À : loopantennas@yahoogroups.com
Objet : Re: [loopantennas] Wellbrook ALA100

This is not rebuttal or anything of the kind, but just some explanation
original poster of the message in this thread, responded privately to my
angles. He sent me two diagrams that made it all clear what he was trying to

do. The rear of his garden ("backyard" to us Americans) has a fence around
it, and makes a 90 degree turn. He wanted to put up two poles on both sides
of the right-angle turn, and run a loop so that the wires were in line with
the fence and not crossing over the garden, thus there would be a right
angle to the loop. His center pole would be at the right-angle intersection,

where his Wellbrook ALA100 preamp would be located. There would be a
horizontal component and a partial-vertical component to his loop wires,
making it less directional. (A small vertical loop is quite directional,
particularly when used with the ALA100, which is how my own ALA100 is being
used.) I did not understand what he was trying to do until he sent me the
diagrams--then it was very clear. I also made a small model with a box and
pencils and thin wire, to see how his loop would look in full
three-dimensional view!
I told him that I thought such a loop would work just fine with his ALA100.
Best regards,
Steve AA7U
NE Oregon
----- Original Message -----
From: "Richards" <jruing@ameritech. <mailto:jruing%40ameritech.net> net>
To: <loopantennas@ <mailto:loopantennas%40yahoogroups.com> yahoogroups.com>
Sent: Monday, January 29, 2007 10:44 AM
Subject: Re: [loopantennas] Wellbrook ALA100

> Does looking at it the "right" way
> make it a "right" Triangle??
>
> ;-)
>
> /////////////// JHR //////////////
>
>
> sonicxcove@aol. <mailto:sonicxcove%40aol.com> com wrote:
>
>>
>> In the third dimension if you look at one the right
> way a triangle can have > 90º angles.
>
>
>
> Post files here. If the file comes from a website, please put it in the
> http://groups. <http://groups.yahoo.com/group/loopantennas/files>
yahoo.com/group/loopantennas/files
>
> You can now view images at higher resolution in Photos. Upload JPG and GIF

> http://ph.groups. <http://ph.groups.yahoo.com/group/loopantennas/photos>
yahoo.com/group/loopantennas/photos
>
>
>
>

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