I have 2 5" FSL antennas and they do just that.. one can do reception and
one can null. The 5" FSL's out perform box loops 3-4 feet in size.
I didnt want to totally null things out in this case, to show an example of
what I heard as I heard it
Paul
On Thu, Jan 27, 2022 at 10:40 AM Rick Kunath via groups.io <k9ao=
yahoo.com@groups.io> wrote:
> Paul,
>
> I wonder if a 4-foot box loop (box not spiral, i.e. the NRC design)
> would let you null that offending station? You should be able to do that
> using a combination of rotation in azimuth and tilting in elevation,
> then back and forth to get the null deep enough to take them out. Back
> when I had strong locals I was able to do that using that loop. You ahve
> to be careful to get the loop balance just right. That's not hard to do
> if you follow the directions. And then you get a good really deep null.
>
> It might be worth a try and you'd have another tool.
>
> Have you tried tilting and rotating the FSL at all? Assuming the
> internal loopstick on the portable doesn't get any of the offending
> station. Otherwise nulling is harder. I would think that would work the
> same way an air-core loop does. I know the ferrite bar loops I built
> back in the day worked that way.
>
> Rick Kunath, K9AO
>
>
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