[bars] Sat AM Zoom discussion of Off-Center-Fed Dipole (OCFD) and list of possible topics for other discussions or presentations

n1hts at comcast.net n1hts at comcast.net
Sun Dec 6 08:24:33 EST 2020


Attached is N1IW's (SK) balun presentation he did at BARS.
I can't find his OCFD presentation so if someone has that
they can post it as well. We did a balun building BARS meeting
for the 4:1 current balun and folks put up their OCF dipoles.
Of course Mike's balun is for legal limit power. I believe N1ALO
built a smaller version for 100 watts and is using it.

All good info Steve.

jim


>     On 12/05/2020 9:53 PM Steven Schultz <steven.schultz.m at gmail.com> wrote:
>      
>      
>     Hello BARS,
>      
>     The Sat AM Zoom meeting today got into a discussion about Off-Center-Fed Dipoles (OCFDs).  This topic raised my interest in discussing or presenting topics such as:
>      
>     Transmission Line Transformers 
>     Balun/Unun Construction 
>     Modeling Dipoles and Off-Center-Fed Dipoles with 4nec2 or EZNEC
>     Off-Center-Fed Dipole Variations  
>     Feeding Off-Center-Fed Dipoles
>     LTspice, a graphical SPICE tool from Linear Technology and Analog Devices
>                         
>     Both 4nec2 and LTspice are free.
>      
>     I do not proclaim to be an expert on these topics, but over time, I have gained some worthwhile experience with them.
>      
>     What follows here are my comments about one kind of feed point mechanism for a particular OCFD.  I then discuss some other feed point mechanisms for some other configurations of the OCFD.
>      
>     Read on if you wish.  Feel free to pass along your comments to me about either this prelude or the discussion in the attached file.
>      
>     73’s,
>     Steve Schultz
>     AC1EX
>     BARS, Philips ARC, and MGEF
>     steven.m.schultz at ieee.org mailto:steven.m.schultz at ieee.org
> 
>      
>     _______________________________________________
>     bars mailing list
>     bars at w1hh.org
>     http://mail.w1hh.org/mailman/listinfo/bars_w1hh.org
> 
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