Wire Antenna List
 

This is a list of any type of Wire antenna

To refine your search click here

Showing matches 1 to 10 of 45

A Stealthy HF Coat Hanger Antenna

No, this is not about some cute antenna that's about the size of an oatmeal box and runs at 100% efficiency from 160 all the way up to 10 meters (and 6 meters if you leave the oats). In fact, there's nothing new on this page. It's just about a very common HF antenna that I recently built.

First an eyes check. Do you see an antenna in this picture?





A six-band, HF Windom antenna

This Windom antenna was marketed in the late 70's and early 80's as Smithe's Windom.
It was designed to cover 80, 40, 20 15, and 10 meters. By serendipity, it also covers the 17
and 2 meter bands.


THE DOUBLE BAZOOKA ANTENNA

The Double Bazooka Dipole is a very efficient single band antenna which is very quiet and does not require the use of a balun. This antenna consists of coax (RG58) or other 50 ohm type with the shield split at the center and the feedline attached to the open ends.


Loop Antenna Dimensions

The purpose of the calculator is to give you a quick overview of the feasibility of "squeezing" a loop into your available yard or apartment space. The calculator yields a reasonable approximation of dimensions, to within 5% over the amateur bands, using typical wire gauges ranging from #12-18 AWG. (It does not calculate inductance, impedance, or even "Q" factor values since it is assumed that tuning will be accomplished using open feeds and a transmatching device, which should more than adequately compensate for the range of construction and materials variations as measured by these parameters.)


Skywire Loop Antenna

In we ham radio operators' continual quest for the perfect antenna system, we try some strange things at times, but often, the simplest is also the best. That is certainly the case with the basic "loop" antenna, an often misunderstood critter, but one that gives absolutely the most for each foot of wire of any antenna I have had occasion to play with.

First, let me reassure you that such an antenna does not necessarily take much room. One reason I went to one in the first place is because I didn't have room for a 260-foot-long dipole for 160 and I wanted to give the "top band" a try for the first time in my 45 years of being a ham. If you are talking 75 meters (and up if you want a multi-band antenna...more later on that), it's only about 65 feet on a side in a square arrangement


Australian Broadband Dipole 2MHz o 30MHz with no ATU

A dipole can be modified by inserting resistive loading networks so as to produce standing waves between the feedpoint and the networks. The authors have, by adjustment of the networks and the dipole sections, developed a travelling wave dipole whose VSWR is less than 2:1 from 3 to 15 MHz and does not exceed 2.6 to 1 from 2.3 to at least 30 MHz.


Eight Bands On One Coax - The Windom Antenna

Requirements for my new antenna were simple: It had to have as many bands as possible on one coax. It had to be something I could BUILD myself (even though I'm getting really lazy in my old age, I still can't force myself to BUY a wire antenna - if I get to the point where the only option left is to buy wires from Gordon West, then I think it's time to hang up ham radio forever). It had to fit in my back yard (140 feet wide at the widest point and full of nasty short scrub oak trees).




THE $4 SPECIAL by Joe Tyburczy W1GFH

Now at this point, some of you may be looking at the diagram and muttering, "Jeez Joe, that's just a dipole fed with twinlead and used with a tuner". Well of course it is. Virtually all antennas are "di-poles" (i.e. "two sides") in some form or another. This one just happens to be made from low-cost materials.

I won't go into the theory here, but trust me: balanced feedline, properly used, does not "leak" RF and is less lossy than coax. I've tried the commercial 450-ohm ladder line, but prefer 300-ohm TV twinlead, and the cheaper the better. Radio Shack TV twinlead is ideal. Home Depot has some good stuff, too. Forget all the obsessive junk about standing waves, impedance and velocity factor. What you really need to concentrate on is getting an interesting set of antenna insulators.


6-Band HF Center-Loaded Off-Center-Fed Dipole

The goal that I set out was to design an HF antenna, with a VSWR of 3:1 or less over the full bandwidth of as many amateur radio HF bands as possible, with a preference for the low- and the non-WARC bands. This design goal has been achived with a new kind of antenna;




Ladder Line 2 Meter J-Pole

Easy and cheap to build wire J Pole. Low SWR and can handle 50 watts


More results

 


11 - 20

Fresh search

Bookmark this page
Bookmark to: Blogmarks Bookmark to: Del.icio.us Bookmark to: Digg Bookmark to: Facebook Bookmark to: Google Bookmark to: StumbleUpon Bookmark to: Windows Live Bookmark to: Yahoo

Admit nothing deny everything and make counter-accusations.

Get Cashback
TopCashBack really is the closest you'll get to Free Money. Read how.


© Copyright www.DigitalHam.co.uk 2005 - 2012