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DX Engineering 3 El 40 Yagis

Subject: DX Engineering 3 El 40 Yagis
From: Steve_Fraasch@ATK.COM (Steve Fraasch)
Date: Sun Mar 28 10:42:44 1993
Can anyone advise Mark, K0KX, and I on the survivability of the DX Engineering 
40DX-3, 3 element 40m yagi?  We'd like to buy, rather than build, since their 
price seems quite reasonable compared to starting from scratch.  We want to 
hear from those who've attended the "antenna school of hard knocks."  So far, 
Kx's 6 el 20m has held up great (~60 MPH wind, 2 ice storms), but we've heard 
that the 40m yagi is not as robust.

Although I've used MININEC extensively for finding mutual, self impedances of 
yagis and phased arrays, I've always wanted to get ground effect for elevated, 
or over water verts (my land is all swamp) which can only be done with NEC (
MININEC only gives choice between perfect electrically conducting ground, or 
free space for solving integral equation), or custom method of moments.  I 
have a copy of MS-DOS executable "NEEDS" (NEC w/ user interface), and the 
FORTRAN source code, which I'd like to compile on a HP-750 workstation.  
Eventually, I may convert it to C, but I'd rather get the FORTRAN version 
working first, but I've not yet attempted to compile it.  Has anyone tried ?

73, Steve, K0SF

Please reply to:

Steve_Fraasch@gateway1.ATK.COM



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