Re: [BVARC] Antenna voodoo

2023-04-10 Thread Chris Medlin via BVARC 
Marc, my first dipole was 20M and in the attic of my 675 sq ft apartment. The 
diagonal could not support the entire length, so a few feet hung vertical on 
the ends.
The antenna doesnt care. I think i worked 14 countries on that antenna. So for 
the most part, it doesnt really matter how you array the halves of your dipole. 
Plenty of shapes. Your signal will still get out.

Chris
AC5CM

Typos brought to you by iPhone

On Apr 10, 2023, at 08:28, M Reiter via BVARC  wrote:


yes that is where the voodoo comes in , it is an inverted v not connected at 
the apex and not a v.  it is a more like a starwars folding wing with the 
connedtion at the mid center bottom. of the delta.  It is one of 10 or so 
temporary antennas and seems to work about as well as any of them.  I really 
hope I am learning something.
Marc.

On Sun, Apr 9, 2023 at 10:59 PM Jerry and Polly Tripp via BVARC 
mailto:bvarc@bvarc.org>> wrote:
I agree. It sounds just like a good old inverted V.

Sent from Yahoo Mail on 
Android

On Sun, Apr 9, 2023 at 9:38 PM, Chris Medlin via BVARC
mailto:bvarc@bvarc.org>> wrote:

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Re: [BVARC] Antenna voodoo

2023-04-10 Thread M Reiter via BVARC 
yes that is where the voodoo comes in , it is an inverted v not connected
at the apex and not a v.  it is a more like a starwars folding wing with
the connedtion at the mid center bottom. of the delta.  It is one of 10 or
so temporary antennas and seems to work about as well as any of them.  I
really hope I am learning something.
Marc.

On Sun, Apr 9, 2023 at 10:59 PM Jerry and Polly Tripp via BVARC <
bvarc@bvarc.org> wrote:

> I agree. It sounds just like a good old inverted V.
>
> Sent from Yahoo Mail on Android
> 
>
> On Sun, Apr 9, 2023 at 9:38 PM, Chris Medlin via BVARC
>  wrote:
> 
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> 
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Re: [BVARC] Antenna voodoo

2023-04-09 Thread Jerry and Polly Tripp via BVARC 
I agree. It sounds just like a good old inverted V.

Sent from Yahoo Mail on Android 
 
  On Sun, Apr 9, 2023 at 9:38 PM, Chris Medlin via BVARC 
wrote:   
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Re: [BVARC] Antenna voodoo

2023-04-09 Thread Chris Medlin via BVARC 
Sounds like he created an inverted Vee to me.

Chris
AC5CM

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On Apr 9, 2023, at 14:39, Christopher Boone via BVARC  wrote:


Took a 40m dipole and put the ends together with a zip tie (so not connected) 
then hung it as a triangle?? You STILL have a dipole...now in the shape of a 
triangle.

no big whoop here

Chris
WB5ITT

On Sun, Apr 9, 2023 at 10:11 AM M Reiter via BVARC 
mailto:bvarc@bvarc.org>> wrote:
This morning i took a 40m dipole attached the wire ends with a zip tie. (No 
metal to metal connection)  And hung it up as a triangle with no measurents the 
top was at the top of my mast and the bottom was as high as i could stand on a 
chair..   I was lazy and just attached it to my radio checked swr on 40m to 10m 
and since 20m was less than 2:1 i hit tune. Made a 59 contact in mississippi.  
Whats my point???  Well i have read hundreds of pages about antennas this 
design is not in any of them and still have no idea why any of this works.
Marc KI5ZHO

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Re: [BVARC] Antenna voodoo

2023-04-09 Thread Christopher Boone via BVARC 
Took a 40m dipole and put the ends together with a zip tie (so not
connected) then hung it as a triangle?? You STILL have a dipole...now in
the shape of a triangle.

no big whoop here

Chris
WB5ITT

On Sun, Apr 9, 2023 at 10:11 AM M Reiter via BVARC  wrote:

> This morning i took a 40m dipole attached the wire ends with a zip tie.
> (No metal to metal connection)  And hung it up as a triangle with no
> measurents the top was at the top of my mast and the bottom was as high as
> i could stand on a chair..   I was lazy and just attached it to my radio
> checked swr on 40m to 10m and since 20m was less than 2:1 i hit tune. Made
> a 59 contact in mississippi.  Whats my point???  Well i have read hundreds
> of pages about antennas this design is not in any of them and still have no
> idea why any of this works.
> Marc KI5ZHO
> 
> Brazos Valley Amateur Radio Club
>
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> Publicly available archives are available here:
> https://www.mail-archive.com/bvarc@bvarc.org/
>

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Re: [BVARC] Antenna voodoo

2023-04-09 Thread Rick Hiller via BVARC 
Marc,

You just haven't read the right pages.  Read about the "Cob Web" antenna
being sold by MFJ and others.  Similar in characteristics.  Look at
http://karinya.net/g3txq/cobweb/  Also, I, W5RH, had a whole BVARC
newsletter Radio Hotel series on loops and one of my loops was a full wave
40 meter delta open at the base line, as yours and ran it on the half
/ harmonic.  also mentioned in the Tech pages article "Blame it on IZO"

OK, so what specifically do you NOT understand?   Why it is 2:1 SWR? Why it
works on 20?   Why it "gets out" or really something else.

 Questions:  What Coax type are you using?  How long is the coax?  Where
did you measure the SWR?  Length of your antenna?  Feedpoint location?

73...Rick  W5RH



On Sun, Apr 9, 2023 at 10:11 AM M Reiter via BVARC  wrote:

> This morning i took a 40m dipole attached the wire ends with a zip tie.
> (No metal to metal connection)  And hung it up as a triangle with no
> measurents the top was at the top of my mast and the bottom was as high as
> i could stand on a chair..   I was lazy and just attached it to my radio
> checked swr on 40m to 10m and since 20m was less than 2:1 i hit tune. Made
> a 59 contact in mississippi.  Whats my point???  Well i have read hundreds
> of pages about antennas this design is not in any of them and still have no
> idea why any of this works.
> Marc KI5ZHO
> 
> Brazos Valley Amateur Radio Club
>
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> BVARC@bvarc.org
> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
> Publicly available archives are available here:
> https://www.mail-archive.com/bvarc@bvarc.org/
>


-- 
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Re: [BVARC] Antenna voodoo

2023-04-09 Thread John Denison via BVARC 
It all depends on propagation. Even if your antenna is not efficient on 
20 meters as a 40 meter dipole, it might still be able to make the trip. 
I tuned my 40 meter inverted V to 80 meters and connected to a Winlink 
gateway near Austin with average transfer speed. It probably wasn't all 
that great for the antenna but it still worked.


73
John Denison
KD5YOU

On 4/9/2023 10:10 AM, M Reiter via BVARC wrote:
This morning i took a 40m dipole attached the wire ends with a zip 
tie. (No metal to metal connection)  And hung it up as a triangle with 
no measurents the top was at the top of my mast and the bottom was as 
high as i could stand on a chair..  I was lazy and just attached it to 
my radio checked swr on 40m to 10m and since 20m was less than 2:1 i 
hit tune. Made a 59 contact in mississippi.  Whats my point???  Well i 
have read hundreds of pages about antennas this design is not in any 
of them and still have no idea why any of this works.

Marc KI5ZHO


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Re: [BVARC] Antenna voodoo

2023-04-09 Thread Bruce via BVARC 
It works because electrons can flow through the wire and radiate. They 
have to go somewhere. Guess they went to Mississippi.


73...bruce

On 4/9/2023 10:10 AM, M Reiter via BVARC wrote:
This morning i took a 40m dipole attached the wire ends with a zip 
tie. (No metal to metal connection)  And hung it up as a triangle with 
no measurents the top was at the top of my mast and the bottom was as 
high as i could stand on a chair..  I was lazy and just attached it to 
my radio checked swr on 40m to 10m and since 20m was less than 2:1 i 
hit tune. Made a 59 contact in mississippi.  Whats my point???  Well i 
have read hundreds of pages about antennas this design is not in any 
of them and still have no idea why any of this works.

Marc KI5ZHO


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[BVARC] Antenna voodoo

2023-04-09 Thread M Reiter via BVARC 
This morning i took a 40m dipole attached the wire ends with a zip tie. (No
metal to metal connection)  And hung it up as a triangle with no measurents
the top was at the top of my mast and the bottom was as high as i could
stand on a chair..   I was lazy and just attached it to my radio checked
swr on 40m to 10m and since 20m was less than 2:1 i hit tune. Made a 59
contact in mississippi.  Whats my point???  Well i have read hundreds of
pages about antennas this design is not in any of them and still have no
idea why any of this works.
Marc KI5ZHO

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