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New loop antenna calculator URL ---
Now available at:
http://www.ti.com/amplifier_utilities
Then click on the "design calculator utilities", and the loop
antenna calculator is at the bottom. The choice for "wire" is the
one you
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Bruce Carter
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#57
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Re: Pizza box loop
Ah, shucks, Scott! ('Bear' sheepishly grins and scuffs his foot)
Thanks!
Sounds like you've got a pretty high Q loop. I have noticed a small
degree of sideband cutting on mine at the low end of the
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qrpbear
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#56
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Re: In search of infos on HF horizontal loop antenas
Gilles,
HF horizontal loops are usually fairly large antennas. Typically cut
to 1005/f(MHz) for circumference in feet. They are often fed with
open wire transmission line using balanced antenna
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qrpbear
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#55
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Re: Pizza box loop
well tried an experiment tonight took the yaesu frg-7700 and look outside and the pizza box loop and from what I see the loop is more directional closer to ground and seems to work better on some
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Scott Savage KC7WDG <kc7wdg@...>
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#54
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In search of infos on HF horizontal loop antenas
Hello !
Question in the title...
Can anybody give me some info about these antenas ?
73's
Gilles FM5AD
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Gilles
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#53
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Another One For Ya'
Following up on a post in the VLF group this morning I visited
Renato's VLF site at...
<http://www.vlf.it>
where he posted details of a new antenna he is using for VLF/ELF
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qrpbear
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#52
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More Compact Antennas
Here is another link to a site dealing with compact antennas
including the coffee can antenna, cone disk, bicone and eh antennas.
There are a number of useful Javascript calculators here as
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qrpbear
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#51
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The Biplane Antenna
Gents,
Here's the link to a compact antenna that I think deserves more in
the way of exploration and exploitation.
<http://www.antennex.com/hws/ws0601/morebp.html>
There's a bunch of other stuff
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qrpbear
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#50
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Re: Mass market loop antennas
Steve,
DDRR stands for Directional Discontinuity Ring Radiator. I thought
about building one for 30 meters (and still may) but rejected it at
the time since horizontal space is more of a premium
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qrpbear
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#49
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Re: Book recommendation
<science@w...> wrote:
Welcome!
I found a free online book on antennas, still being written. From
Rutger's University, called Electromagnetic Waves and
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Steven Greenfield AE7HD
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#48
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Re: Mass market loop antennas
<science@w...> wrote:
My brain won't stop buzzing. It's hard to wind down and sleep at
night. When I was young and my body could take it, I might stay up for
a couple of days or 3 days (rarely!) in a
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Steven Greenfield AE7HD
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#47
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Re: More strangeness
Let's just let this drop, and talk about loops.
Steve
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Steven Greenfield AE7HD
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#46
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Re: Mass market loop antennas
Man, where do you find the time? I mean, HAM, propmaking, electronics,
weird antennas, mad scientisting, moderating...
I need a tutorial from you!
-Brian Wesley
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Brian Wesley Rich <science@...>
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#44
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Re: More strangeness
I read that as "get you back in, enough said."
-Brian
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Brian Wesley Rich <science@...>
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#43
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Book recommendation
Just received the invitation to join this list. Pleasure to be here;
thankyouverymuch.
One of the loop antennas I have built was about 4 feet on a side,
about 4 turns; built for listening to
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Brian Wesley Rich <science@...>
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#45
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Re: Theory v. Practice
Barry,
Yah... there doesn't seem to be a whole lot of "middle ground" in
loop theory. I had some calculus in high school 40 some odd years ago
but don't remember how to do any of it now. Simple
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qrpbear
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#42
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Re: Mass market loop antennas
Steve,
Gotta agree with you on this one. I get people coming in to the store
almost every week wanting to know how they can get better reception
of AM stations on their radio. It's the same ol'
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qrpbear
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#41
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Mass market loop antennas
What most people want is just to buy a radio and have it pick up
the station they want.
It's only tyros like us who will go to the trouble of owning a
radio -and- an add-on antenna.
Had a gentleman
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Steven Greenfield AE7HD
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#40
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Re: More strangeness
I looked up his profile and stumbled onto his web site. He is 26
years old, and seems to be a normal guy. I think he wants to
develop intellectual property regarding loop design, and possible go
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Bruce Carter
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#39
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Re: Pizza box loop
Or better yet get a clean one from the pizza restaurant so it
doesn't STINK or attract ants.
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Bruce Carter
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#38
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