Re: loop material question
John, there is nothing wrong with flat material....except dimensional stability and wind loading.? Even for TX, people have used aluminum flashing to build loops (look up "midnight loop").? It's
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Dan Clementi
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#20774
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Re: loop material question
So the loop would resemble something like THIS. The antenna in the picture is horizontally mounted but can be mounted vertically as well. There are manuals on the web as the Isoloop has not been
By
kevin asato
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#20773
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Re: loop material question
It would be left flat. Not tubular. So it would be a circle of 6” wide copper sheet I have a lot of scrap laying around. Mainly my question is does the element need to be round. ?My loop would be
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Superlite
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#20772
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Re: loop material question
Just wondering if using a sheet of material and rolling your own tube would really be any cheaper or provide any significant benefit over just using readily available copper water tubing available at
By
Tom ANderson
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#20771
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Re: loop material question
wow, thanks for all of the replies.
yes. I could use 16 or 20oz copper sheet or .032 aluminum.
I see many people modify existing loops to use copper pipe. Is it necessary to use a round material?
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Superlite
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#20770
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Re: loop material question
A circle encloses the largest area for a given length of material, so the largest received signal. Loops made of wire are generally square for the simplest support structure. Loops made of tubing can
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John Kolb
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#20769
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Re: loop material question
With regard to message /g/loopantennas/message/20763, ( /g/loopantennas/message/20763 )
It is generally accepted that copper and aluminum are very good conductors of
By
Robin Midgett
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#20768
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Re: loop material question
I'll contribute with my additional question (ouch):
When the thing is a small NON-resonant magnetic loop, for RX-only... is the loop material thickness meaningful?
73, Jukka
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Jukka / OH2BUA
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#20767
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Re: loop material question
?
?Hi Dave
John said rx only.
Dave , at time of my reply where I said bigger the better no frequency was specified..ie if was for vlf then all good etc. obvs if for hf then there is a limit
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Simon
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#20766
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Re: loop material question
Not to the point of conductor diameter, but one of my reservations using
sheet metal. Considering a mag loop must support large RF currents, I'd be
a bit hesitant to use sheet metal. It is not a
By
W0LEV
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#20765
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Re: loop material question
Thanks by the way. Forgot to add that in my reply ??♂?
John is my name.
By
Superlite
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#20764
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Re: loop material question
currently using an mla30+, I am incapable of not tinkering.
pre amped, probably will use LZA1Q but wouldn’t mind something stateside.
Possibly tuned with dual gang capacitor.
really my question is
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Superlite
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#20763
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Re: loop material question
Hi, Simon
A thicker tube diameter causes a higher loop capacitance and therefore has an impact on the self-resonance frequency of the loop.
regards, Fred
By
Fred M
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#20762
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Re: loop material question
Hi
Welcome.
We need much more info on what you intend to make before advice can be reliably given.
Ie.. active pre amped no tune loop antenna,( ie lz1aq type,) high q tuned? Dia of loop,
By
Simon
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#20761
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loop material question
Hello,
lots of great info here. I am new to the group IO format, just created an account. I have been paging through the topics and tags but I cannot seem to find anything that deals directly with the
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Superlite
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#20760
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Re: Items that may be of interest to some
Happy New Year 2025 Everett
Thank you for your new document and for all your information and advice disclosed on this group
Best regards
Bernard
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Bernard Malet
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#20759
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Items that may be of interest to some
I have attached a link the has information on some of the items that I have designed that may be of interest to the group that will enhance your listening experience on the bands.
?Everett
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Everett N4CY
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#20758
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Re: AlexTune: max brightness != lowest SWR?
There could be many explanations for this, but I'll offer a few of the more likely ones.
It may simply be that your loop is not a 50 ohm match, and when tuned for "maximum smoke", the actual input
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Martin - Southwest UK
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#20757
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Re: A link with will show items that might be of interest
Glads,
Thanks, now I will have to figure this out.?
Everett
Sent from the all new AOL app for iOS
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Everett N4CY
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#20756
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Re: A link with will show items that might be of interest
you need to grant access to everyone
Gedas, W8BYA EN70JT
Light travels faster than sound.....
This is why some people appear bright until you hear them speak.
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Gedas
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#20755
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