[IRCA] New article on terminated loop remote resistance control

["Kevin S" <satya@xxxxxxxxxxxx>]

Hi all:

For those of you using or looking at a EWE, Super Loop, Pennant or other
terminated loop antenna, just posted to DXer.ca and the Yahoo UltralightDX
group is an article about a controller which precisely varies the
resistance over a selected range.  In experimenting with a Conti Super
Loop, I have found that a single resistance value will not provide
acceptable nulls for the entire band (the optimum value can vary by
several hundred ohms depending on the target), and that the ability to
fine-tune the resistance can make a big difference, since being off by
50-75 ohms might miss the null altogether.  This remote termination design
allows you to stay in front of the radio while you tweak the resistance
for the best null.  Thanks to Steve Ratzlaff for the bulk of the design
and construction!

Here's the DXer.ca link:
http://www.dxer.ca/file-area/cat_view/87-ultra-light-radio-files-area/97-ulr-antennas
It is also in Section 5 of the Yahoo UltralightDX group files section.

Kevin S
Bainbridge Island, WA
_______________________________________________
IRCA mailing list
IRCA@xxxxxxxxxxxxxxxx
http://montreal.kotalampi.com/mailman/listinfo/irca

Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers

For more information: http://www.ircaonline.org

To Post a message: irca@xxxxxxxxxxxxxxxx