[TowerTalk] Fwd: Multiband antenna with non-resonant trap

[Hans Hammarquist]

WinXP is a good choice. Unfortunately when you buy a new computer it is loaded with "the latest" and I am not savvy enough to change it.


I do remember an article in either QST or QEX with excellent explanations and example.


My idea is to take a telescoping pool pole, usually divided in the middle or in two places, isolate the different sections and add a trap or two. Walmart sells the 12' ploes for $13/pcs and I figure I would have a nice vertical multiband that way.


73 de,


Hans - N2JFS



-----Original Message-----
From: Roger D Johnson <n1rj at roadrunner.com>
To: Hans Hammarquist <hanslg at aol.com>
Sent: Sun, May 26, 2013 9:22 am
Subject: Re: [TowerTalk] Multiband antenna with non-resonant trap


Afraid not, Hans. I stuck with WinXP after reading of all the problems 
with Win7
running ham applications. You could download the free version of EZNEC and
use that to design your antenna.

73, Roger


Hans Hammarquist wrote:
> Hi Roger,
>
> Thanks for your reply. I can't, for whatever reason get the program to 
> work on my computer. I believe I have Windows 7 (I am not sure how to 
> check that) and that might be the problem.
>
> Any suggestion?
>
> 73 de,
>
> Hans - N2JFS
>
>
> -----Original Message-----
> From: Roger D Johnson <n1rj at roadrunner.com>
> To: Hans Hammarquist <hanslg at aol.com>
> Sent: Sun, May 26, 2013 7:45 am
> Subject: Re: [TowerTalk] Multiband antenna with non-resonant trap
>
> Hi Hans...
>
> Here is the "NOTATRAP" program from G4FGQ. It should do what you
> want.
>
> 73, Roger
>
> Hans Hammarquist wrote:
> > This might be the wrong forum but does anyone remember an article in QST (or 

> maybe QEX) of how to make multibands antennas using LC traps where the traps 
> resonance frequency is not at the operating frequencies. By putting an LC 
> circuit somewhere in or close to the center of a vertical you get two 
> resonances, one where the C-part act and increase the resonance and one where 
> the L-part decreases the resonance frequency.
> >
> >
> > Anyone?
> >
> >
> > 73 de,
> >
> >
> > Hans - N2JFS
> > _______________________________________________
> >
> >
> >
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> >
> >   
>
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>

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