[TowerTalk] HF LOG-PERIODIC ANTENNAS Comments Please

[Larry Phipps]

When figuring the cost, you might want to consider that the T-6 is closer to the 2 element SteppIR than the three in terms of gain and F/B.

One point needs to be made, especially for contesters. The LPDA is a very low Q antenna with very wide bandwidth... the SteppIR is a high Q antenna with narrow bandwidth that is frequency agile. 

When the bands are very crowded with big signals, there is a huge difference in the strength of unwanted signals reaching the receiver front-end. 

Larry N8LP


----- Original Message ----- 
From: hasan Schiers 
To: Towertalk 
Sent: Tuesday, June 22, 2004 9:37 PM
Subject: Re: [TowerTalk] HF LOG-PERIODIC ANTENNAS Comments Please


Great concept, the SteppIR...but cost about 4x as much as the T-6.  I helped
put one up about two weeks ago. It works rather nicely, but looks like an
accident waiting to happen. (complexity).

...hasan, N0AN
----- Original Message ----- 
From: "David Greer" <davidgreer73 at yahoo.com>
To: "RCARIELLO" <RCARIELLO at si.rr.com>; "FCG" <fcg at kkn.net>; "Towertalk"
<Towertalk at contesting.com>
Sent: Tuesday, June 22, 2004 7:15 AM
Subject: Re: [TowerTalk] HF LOG-PERIODIC ANTENNAS Comments Please


> I used a Tennadyne T6 for several years with excellent
> results. No traps -- and little to go wrong with the
> antenna. Very nice antenna. But then I switched to a 3
> element SteppIR and find it produces superior results.
> Of course, it has moving parts up in the air. That's
> never bothered me.
>
> The SteppIR has the same frequency agility as a LPDA
> since it tunes continuously from 13.6 to 60 MHz but
> with more gain and much better f/b.
>
> 73, Dave
> N4KZ
>
>
>
>
>
>
>
>
>
> --- RCARIELLO <RCARIELLO at si.rr.com> wrote:
> > Hello to all,
> > I am wondering if a stack of three Log-Periodic
> > Antennas is the way to go.
> > At best my single tower station will have three
> > Tri-Banders on it. Possibly
> > a Force12 C3S around 90-60-30 feet.
> >
> > I have been seeing allot of talk about the Stepper
> > Antenna Systems.
> > >From what I am reading, the big advantage in this
> > type of antenna seems to
> > be the antenna tuning to the frequency of use.
> >
> > In the past I have heard negative comments that a
> > Log-Periodic has allot of
> > aluminum not being used. These remarks may be true
> > when compared to
> > Mono-Band antennas but is it true when compared to
> > tri-banders.
> >
> > I am wondering if anyone has any experience with the
> > performance of
> > Log-Periodic antennas as compared to a Tri-Banders.
> > Is this the type of
> > antenna to use for contest operations.
> >
> > TENNADTNE ANTENNAS
> > Any comments on the performance and quality of these
> > antennas.
> > I am considering models:
> > T6---12 foot boom---6 elements
> > T8---18 foot boom---8 elements
> >
> > I understand both these models can be side mounded
> > on my tower.
> >
> > Thanks for your help.
> >
> > Rich AA2MF
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > _______________________________________________
> >
> > See: http://www.mscomputer.com  for "Self Supporting
> > Towers", "Wireless Weather Stations", and lot's
> > more.  Call Toll Free, 1-800-333-9041 with any
> > questions and ask for Sherman, W2FLA.
> >
> > _______________________________________________
> > TowerTalk mailing list
> > TowerTalk at contesting.com
> >
> http://lists.contesting.com/mailman/listinfo/towertalk
> >
>
>
> =====
> David Greer
>
>
>
> __________________________________
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>
> See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
>
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_______________________________________________

See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA.

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