[Antennas] Professional MLA measurements & comparisons ?

[Brian Cake]

Henry,

    I don't know of any professional MLA measurements. However, you might be 
interested in a chapter in my book "Antenna Designer's Notebook", where I 
take a detailed look at the theoretical performance of a loop, including all 
the loss mechanisms. I also describe a loop that has much higher efficiency 
than a conventional loop.

    The book is published by the ARRL.

    &3

    Brian KF2YN


----- Original Message ----- 
From: "Henry Frederick "Meils" Meiseles" <meils at get2net.dk>
To: <antennas at mailman.qth.net>
Sent: Monday, May 23, 2011 2:55 AM
Subject: [Antennas] Professional MLA measurements & comparisons ?


>I would guess that there are comparative radiation pattern measurement data 
>available
> on Magnetic Loop Antennas, particularly since they've been used by US 
> military.
>
> Any nonclassified data available that can be shared?
>
> (Is this type of work still done on at Fort Monmouth? Much done there has 
> been
> publicized in the past.)
>
> I've been reading so many claims  (here in DK) about how fantastic MLA's 
> are supposed
> to be compared to dipoles and verticals but my own few experimental MLA's 
> showed
> them to be OK in comparison but not more than that.
>
> Are they superior for short distance communication via very hi angle 
> radiation and
> vertical ionosphere bounce back?  If so that would explain why they would 
> be useful
> in jungle and/or mountainous terrain (Viet Nam).
>
>
>
> Some say that MLA's have to be kept a good distance from metal structures, 
> others
> say doing so doesn't have any strong negative influence. My guess is that 
> the former is right.
>
> Henry, Cph.
>
> oz3o n2nr
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