Ya Know
there is a very simple solution to this stacking stuff
and big antenna problems....
move your station to the caribbean :-)
all you need is a 70ft tower a good multiband yagi and
a few wires....
i can always dream i guess....
Dan N8DCJ
--- N2TK <tony.kaz@verizon.net> wrote:
> Pete,
> The MAG240N and EF240S seem to be two different type
> antennas. The "N"
> series has the linear loading moved out away from
> the boom.
>
> N2TK, Tony
> -----Original Message-----
> From: towertalk-bounces@contesting.com
> [mailto:towertalk-bounces@contesting.com]On Behalf
> Of Pete Smith
> Sent: Saturday, August 07, 2004 5:38 PM
> To: RICHARD BOYD; towertalk@contesting.com; Jose
> Castillo
> Subject: Re: [TowerTalk] STACKING
>
> The 240 part of the F12 antenna is, I believe, the
> same as an EF-240S. At
> 6 foot spacing from my top tribander, I had to turn
> my EF-240S 90 degrees
> to prevent significantly affecting the SWR of my F12
> tribander on
> 15. Advice from Force 12 was at least 12 feet
> spacing, but each unique
> combination of antennas brings its own set of
> problems.
>
> 73, Pete N4ZR
>
> At 02:53 PM 8/7/2004, RICHARD BOYD wrote:
>
> >As I often do, quoting others more expert than
> myself, the main issue seems
> >to be detuning of the 15M yagi by the 40M yagi. I
> asked W3LPL how far a 15
> >and a 40 should be apart. He thought 30' would be
> good.
> >
> >Most of us would not be able to get that much
> distance and still have them
> >both rotating on a mast at the top. One of them
> would either have to be
> >sidemounted lower down the tower, or you have to
> accept the potential for
> >degradation of performance by having them closer.
> >
> >In the real world, many people put their tribander
> and 2-el 40 within a few
> >feet of each other and are satisfied with the
> performance. Obviously, more
> >is better. While it's a different situation,
> different bands, I have 20
> and
> >15 yagis 8' apart and they've always worked well.
> It's the
> >interaction/degradation problem that causes people
> to pair 40/10 and 20/15
> >on two towers -- alternatively, 40/20 and 15/10.
> But not 40/15 together.
> >With a tribander for 20/15/10 that's not the
> situation you have. 15 is the
> >one that suffers, typically.
> >
> >Probably 6-8-10' separation between the tribander
> and 40 is worth a try and
> >see if it works satisfactorily for you. The
> resonant point and/or pattern
> >of the 15 may change.
> >
> >You might try putting up the tribander first and do
> good performance plots
> >across each of the three bands. Then put up the 40
> at whatever separation
> >you can achieve and repeat the plots to see what
> effects you can observe.
> >
> >73 - Rich, KE3Q
> >
> >
> >----- Original Message -----
> >From: "Jose Castillo" <N4BAA@cox.net>
> >To: <towertalk@contesting.com>
> >Sent: Thursday, August 05, 2004 7:54 PM
> >Subject: [TowerTalk] STACKING
> >
> >
> > > Hello,
> > > I am planning on purchasing a SteppIR 4 element
> yagi.
> > > I also have a Force 12 240/230 (2 ele on 40 and
> 30 meters)
> > >
> > > How high above the SteppIR would be adequate?
> > >
> > > 73
> > > Jose - N4BAA and YI9BAA
> > >
> > > _______________________________________________
> > >
> > > 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@contesting.com
> > >
>
http://lists.contesting.com/mailman/listinfo/towertalk
> > >
> >_______________________________________________
> >
> >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@contesting.com
>
>http://lists.contesting.com/mailman/listinfo/towertalk
>
> _______________________________________________
>
> 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@contesting.com
>
http://lists.contesting.com/mailman/listinfo/towertalk
>
>
> _______________________________________________
>
> 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@contesting.com
>
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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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