Re: VLF question
Tom, Here is another link for you
https://www.w8ji.com/magnetic_receiving_loops.htm
[email protected]> wrote:
By
Fred Moore
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#21039
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Re: VLF question
Good Evening Tom.
Here is one of them
https://www.qsl.net/vk5br/LoopAntennas/VLF-LFLoopAerial.htm This is an
open wire loop with no shielding for obvious reasons because of its
physical size.
Here
By
Fred Moore
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#21038
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Re: VLF question
Fred,
Can you list the web sites that talk about this type of antenna? I have never heard of the gap that you mention nor the shielding.
I am familiar with loop antenna but this seems very different
By
Tom ANderson
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#21037
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Re: File upload: Rotable FLAG-antenna
That's exactly what I intend to do.? :)
73
By
Warren Dean / NI5L
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#21036
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Re: VLF question
Look at the W1VLF YouTube channel. He has several different loops of different sizes and materials. For example a 9' x 9' loop made from hardware
By
Mike M
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#21035
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Re: VLF question
Just for the heck of it I asked AI if the ground rods would work and this is what it came back with.
?Everett N4CY?
Yes, it is possible to detect VLF (Very Low Frequency) signals using two rods in
By
Everett N4CY
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#21034
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Re: VLF question
What would happen if you put two ground rods in the ground, spaced 25' to 50' apart and use an amplifier?
?Everett
By
Everett N4CY
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#21033
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Re: VLF question
Or that one: https://www.ebay.com/itm/144928782978
<1rfsam@...> wrote:
By
rfsam
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#21032
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Re: VLF question
There are also PEX lines with aluminum layer between plastic layers.
Could be a proper candidate for shielded loop?
Like that
By
rfsam
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#21031
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Re: VLF question
Hi Martin,
What are your thoughts on shielded loops (broadband amplified or
resonated with the cap) - do they really work or it's not worth the
hassle?
Thank
By
rfsam
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#21030
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Re: VLF question
You could cover your PEX with a continuous layer of a good conductive
material like copper mesh or copper (bronze) screen. But be sure to
introduce the break at the top of the loop. I believe PEX
By
W0LEV
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#21029
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Re: VLF question
I think the skin depth of the various conductor types you have suggested may be an influencing factor.
Some of the antenna articles on the VLF.IT website could be of
By
Martin - Southwest UK
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#21028
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VLF question
I am thinking of making a VLF loop out of a 10 ft piece of PEX pipe with
many turns of wire inside the PEX and a plastic junction box on the
bottom. I have read several articles about doing the same
By
Fred Moore
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#21027
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Re: File upload: Rotable FLAG-antenna
Hi Warren!
Don't really know. But why not try and find out?
/Hans
tir. 11. feb. 2025 kl. 17:17 skrev Warren Dean / NI5L via groups.io <ni5l=
[email protected]>:
By
Hans Ostnell
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#21026
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Re: File upload: Rotable FLAG-antenna
Hans,
Would there be any problem feeding the antenna and pre-amp with CAT-6 cable?
I read an article by a Canadian fellow that CAT 6 is better than coax because:
The twisted pairs are naturally
By
Warren Dean / NI5L
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#21025
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Re: File upload: Rotable FLAG-antenna
Hi Hans.
Can you verify this is actually the case: " In a passive splitter, there is a 6dB signal loss on each output and you may want to compensate for this loss, using a 6dB buffer amplifier. "
A
By
Jim
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#21024
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Re: File upload: Rotable FLAG-antenna
/g/loopantennas/files/The_Growing_FLAG.pdf
Regards,
Martin
By
Martin - Southwest UK
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#21023
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Re: Entry Level SDR recommendations
When it comes to ease of use, I recommend web-888 which integrates most of the codecs.
It is based on openweb-rx and can work independently from the computer. As long as there is a browser device,
By
fei666888@...
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#21022
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Re: File upload: Rotable FLAG-antenna
Thanks Oliver
By
Mike Usher
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#21021
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Re: File upload: Rotable FLAG-antenna
Hello Mike,
look on this Website. PDF is under FLAG Antennas.( The growing FLAG Antenna)
https://www.dxinfo.se/
By
Oliver
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#21020
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