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Re: [TowerTalk] How can a SteppIR Perform So Well?

To: <towertalk@contesting.com>
Subject: Re: [TowerTalk] How can a SteppIR Perform So Well?
From: "Keith Dutson" <kjdutson@earthlink.net>
Reply-to: keith@dutson.net
Date: Thu, 17 Mar 2005 14:30:12 -0600
List-post: <mailto:towertalk@contesting.com>
Here is some more comparison information that will be helpful to any
prospective buyer:

                #el/band        Turn Radius     Weight  pwr     wind rating
wind area       price
SteppIR 3                       19.7    42lb            2KW             100
6.1     $1198
C-3E            2                       19.8    34lb            5KW
100             5.8     $735

Keith NM5G

[snip]

The three element SteppIR is a valid comparison to your C3 ... 
the SteppIR has half the elements on a boom that is two feet shorter.  Yet
the SteppIR outperforms the C3 in model studies and range tests using the
K7LXC/N0AX protocols. 

> The SteppIR 3 element yagi vs Force 12 C-3E (74' above ground)
>
>                  C-3E           SteppIR             elev.
>    Band        Gain   F/R     Gain     F/R 
>     20         12.6    16     13.4     20        13 degrees
>     17         10.3     7     13.8     21        10 degrees
>     15         12.8    17     14.2     21         8 degrees 
>     12          9.8     9     14.8     14.5       7 degrees
>     10         13.2    21     15.2     11         7 degrees 
>      6             n/a        16.0     20         4 degrees 
>
> The C-3E numbers are Force-12 published specifications and confirmed 
> by modeling with AO.  The SteppIR numbers are from modeling in AO/YO 
> (6 meter values use the optional passive elements).

73, 

   ... Joe, K4IK 
 

_______________________________________________

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.

_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk

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