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Locked 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
By Bruce Carter · #57 ·
Locked 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
By qrpbear · #56 ·
Locked 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
By qrpbear · #55 ·
Locked 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
By Scott Savage KC7WDG <kc7wdg@...> · #54 ·
Locked 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
By Gilles · #53 ·
Locked 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
By qrpbear · #52 ·
Locked 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
By qrpbear · #51 ·
Locked 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
By qrpbear · #50 ·
Locked 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
By qrpbear · #49 ·
Locked 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
By Steven Greenfield AE7HD · #48 ·
Locked 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
By Steven Greenfield AE7HD · #47 ·
Locked Re: More strangeness
Let's just let this drop, and talk about loops. Steve
By Steven Greenfield AE7HD · #46 ·
Locked 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
By Brian Wesley Rich <science@...> · #44 ·
Locked Re: More strangeness
I read that as "get you back in, enough said." -Brian
By Brian Wesley Rich <science@...> · #43 ·
Locked 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
By Brian Wesley Rich <science@...> · #45 ·
Locked 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
By qrpbear · #42 ·
Locked 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'
By qrpbear · #41 ·
Locked 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
By Steven Greenfield AE7HD · #40 ·
Locked 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
By Bruce Carter · #39 ·
Locked Re: Pizza box loop
Or better yet get a clean one from the pizza restaurant so it doesn't STINK or attract ants.
By Bruce Carter · #38 ·