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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TowerTalk\]\s+Two\s+15m\s+yagi\s+stacking\.\.\.and\s+SteppIRs\s*$/: 5 ]

Total 5 documents matching your query.

1. Re: [TowerTalk] Two 15m yagi stacking...and SteppIRs (score: 1)
Author: Cqtestk4xs@aol.com
Date: Sat, 24 Feb 2007 12:17:13 EST
The best way to answer these questions is to get a copy of HFTA, which comes with the ARRL Antenna book. It lets you model the pattern of stacked antennas, varying spacing, etc., and factoring in you
/archives//html/Towertalk/2007-02/msg00396.html (8,721 bytes)

2. Re: [TowerTalk] Two 15m yagi stacking...and SteppIRs (score: 1)
Author: Michael Keane K1MK <k1mk@alum.mit.edu>
Date: Sat, 24 Feb 2007 12:48:01 -0500
Consideration of stacking distance on the boom length comes about from trying to maximize free space gain by minimizing interactions when using a yagi design that has fixed element lengths and spacin
/archives//html/Towertalk/2007-02/msg00398.html (9,022 bytes)

3. Re: [TowerTalk] Two 15m yagi stacking...and SteppIRs (score: 1)
Author: <sabrams@nycap.rr.com>
Date: Sat, 24 Feb 2007 13:01:38 -0500
You are correct. The program uses the number of elements as a surrogate for the boom length. It assume "traditional boom lengths for the number of elements. I have a 4 element 20 meter beam on a 54 b
/archives//html/Towertalk/2007-02/msg00401.html (10,217 bytes)

4. Re: [TowerTalk] Two 15m yagi stacking...and SteppIRs (score: 1)
Author: Jim Lux <jimlux@earthlink.net>
Date: Sat, 24 Feb 2007 12:05:46 -0800
Is it? There's two factors at work in stacking: 1) the interaction between the antennas and 2) the pattern of a single antenna. Boom length has an effect on this, but so does the particular design fo
/archives//html/Towertalk/2007-02/msg00403.html (9,761 bytes)

5. Re: [TowerTalk] Two 15m yagi stacking...and SteppIRs (score: 1)
Author: "Dick Green WC1M" <wc1m@msn.com>
Date: Sat, 24 Feb 2007 15:58:15 -0500
I've done a fair amount of modeling for my 3-stack of 4-el SteppIRs (only the top one is in the air so far -- the rest will be mounted when the snow melts.) I think you're theory is correct, but may
/archives//html/Towertalk/2007-02/msg00406.html (13,274 bytes)


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