[AMRadio] DF antennas for noise source

[Rob Atkinson]

Jim thanks, speaking for myself I can look them up with the information you
have given.  They both sound helpful.

73

Rob
K5UJ

On Mon, Oct 4, 2010 at 5:04 PM, JAMES HANLON <knjhanlon at msn.com> wrote:

> My ARRL Antenna Book, 18th edition, has a couple of antennas that might be
> just the trick for finding noise sources on 10 meters.  On page 14-12 you
> will find "A Shielded Loop with Sensing Antenna for 28 MHz," and "The Snoop
> Loop - For Close-Range RDF."  Both are easily home-brewed.  The Shielded
> Loop is intended for use with an external 10 meter receiver, and dit
> includes a "sense antenna" option that allows the user to check on which of
> the two nulls shown by the plain loop is the correct direction.  The "Snoop
> Loop" is a self-contained antenna with detector and amplifier that needs no
> extra receiver.  It features an "unbalanced loop" that gives you a definite
> maximum off one side of the loop as well as the usual bi-directional nulls.
>
> I'll be happy to copy pages 14-12 through 14-14 for anyone who is
> interested.  You can also find the Shielded Loop in QST, April 1954,
> "Transmitter Hunting with the DF Loop," by L. R. Norberg.  The Snoop Loop is
> in QST, September 1957, "The Snoop-Loop" by C. M. Maer, Jr.
>
> Jim, W8KGI
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