Look for it on YouTube. It’s not commercially available.

On Fri, Jan 28, 2022 at 8:36 AM Zack Widup <w9sz.zack@gmail.com> wrote:

> I have not heard of the FSL antenna up till now. Is there a site somewhere
> with construction details? What kind of ferrite rod? (What is the best type
> of material? 61? 77?). Will these work in the LF range? (down to 100 kHz)?
>
> Zack W9SZ
>
> On Thu, Jan 27, 2022 at 1:48 PM Paul B. Walker, Jr. <
> walkerbroadcasting@gmail.com> wrote:
>
>> 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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>>
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