Dave/Dale:
I was really interested in one of these a few years back but after
studying the various web pages devoted to magnetic loop antennas I was
left with more questions than answers about how they might help with
power line noise.
It's easy enough to see how a directional receive antenna would help.
And a steerable receive antenna for 30MHz down to below standard
broadcast might see a lot of use.
I've got probably three different line noise sources all probably
one-half mile and further away along with one really nasty fence charger
pop. None of these sources could be called near field.
None of these (at least at present) are bad enough to wage a campaign over.
So, do you think you are actually getting some rejection of line noise
or is the improvement in reception mostly due to the directional
properties of the antenna?
Pat
wa4tuk
On 3/22/2014 1:09 PM, Dale J. wrote:
Dave,
I've been looking at one of these. Do you use it in conjunction as a noise
antenna for a noise canceler or alone? What if the signal you are trying to
hear is in the null zone? I assume you have a small rotor for it?
Dale, k9vuj
On 22, Mar 2014, at 11:22, "David Harmon" <k6xyz@sbcglobal.net> wrote:
Because these noise cancellers did not work very well for me and required
constant fiddling I got a Pixel magnetic loop.
These units have the ability to null out plasma noise as well as being
non-responsive to power line type noise.
It is a receive only antenna about 40" in diameter mounted on a 10' conduit
in the yard.
It is portable as well....I can disconnect the coax and walk away in 26
seconds.
It has a broad band amp at the loop and I use a 18db DXE amp under the desk
to get the received signal equal to the main antenna.
The directivity increases as the frequency goes up.
It is expensive....$500 but if bought direct from Pixel it has a 30 day no
questions asked money back guarantee if you are dissatisfied in any way.
It is the difference between going permanently off the air or continuing to
operate.
I cannot stress how well this thing works.
It took my 20/9 noise to S1.
73
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