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Re: [IRCA] EXPERIENCE WITH LARGE LOOPS
- Subject: Re: [IRCA] EXPERIENCE WITH LARGE LOOPS
- From: Steve Ratzlaff <ratzlaffsteve@xxxxxxxxx>
- Date: Tue, 23 Feb 2016 09:42:14 -0700
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A number of folks on the Yahoo ndblist use the ALA100 preamp with larger
circumference loops for LF NDB reception, and loops in the 120-150 foot
circumference work very well, as long as the loop isn't pointed right at
a strong nearby AMBC station--then overload can be experienced. I've
used such loops too with the ALA100 preamp with great results at LF.
Steve
On 2/23/2016 5:51 AM, Mark Durenberger Mobile wrote:
Finally in possession of a Wellbrook ALA-100 (sometimes us old folks
move slowly).
I'm intrigued by the idea of a large magnetic loop and seeking war
stories from anyone who has built these larger-circumference arrays.
Wellbrook suggest a 60-foot circumference is about as large as you
should go to take full advantage of the amplifier.
At our upcoming DesertDXPedition in Utah we plan on chasing signals
below 500 kHz. What I'm curious about is whether such a large loop is
necessary to give us a leg-up on long-wave. Might we do (almost) as
well with smaller antennas?
This group is extremely responsive and supportive, and I'm looking
forward to your thoughts!
Cheers!
Mark Durenberger
With the MN Twins Spring Training, Ft Myers FL
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