Current File : /var/www/html/o91-api/public/pxzjxi/cache/3ae57c67e1b03ea86bc0bfe6b220be08
a:5:{s:8:"template";s:6168:"<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta content="width=device-width, initial-scale=1" name="viewport">
<title>{{ keyword }}</title>
<link href="//fonts.googleapis.com/css?family=Poppins%3A300%2C400%2C500%2C600%2C700%2C800%7CMontserrat%3A400%2C500%2C600%2C700%2C800%7Citalic&subset=latin%2Clatin-ext" id="businessup-fonts-css" media="all" rel="stylesheet" type="text/css">
<style rel="stylesheet" type="text/css">@charset "UTF-8";.has-drop-cap:not(:focus):first-letter{float:left;font-size:8.4em;line-height:.68;font-weight:100;margin:.05em .1em 0 0;text-transform:uppercase;font-style:normal}.has-drop-cap:not(:focus):after{content:"";display:table;clear:both;padding-top:14px}@font-face{font-family:Montserrat;font-style:normal;font-weight:400;src:local('Montserrat Regular'),local('Montserrat-Regular'),url(http://fonts.gstatic.com/s/montserrat/v14/JTUSjIg1_i6t8kCHKm459Wdhzg.ttf) format('truetype')}@font-face{font-family:Montserrat;font-style:normal;font-weight:500;src:local('Montserrat Medium'),local('Montserrat-Medium'),url(http://fonts.gstatic.com/s/montserrat/v14/JTURjIg1_i6t8kCHKm45_ZpC3gfD-w.ttf) format('truetype')} @font-face{font-family:Poppins;font-style:normal;font-weight:400;src:local('Poppins Regular'),local('Poppins-Regular'),url(http://fonts.gstatic.com/s/poppins/v9/pxiEyp8kv8JHgFVrJJnedw.ttf) format('truetype')}@font-face{font-family:Poppins;font-style:normal;font-weight:500;src:local('Poppins Medium'),local('Poppins-Medium'),url(http://fonts.gstatic.com/s/poppins/v9/pxiByp8kv8JHgFVrLGT9Z1JlEA.ttf) format('truetype')} html{font-family:sans-serif;-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%}body{margin:0}footer,header{display:block}a{background-color:transparent}a:active,a:hover{outline:0}h1{margin:.67em 0;font-size:2em}/*! Source: https://github.com/h5bp/html5-boilerplate/blob/master/src/css/main.css */@media print{*,:after,:before{color:#000!important;text-shadow:none!important;background:0 0!important;-webkit-box-shadow:none!important;box-shadow:none!important}a,a:visited{text-decoration:underline}a[href]:after{content:" (" attr(href) ")"}a[href^="#"]:after{content:""}p{orphans:3;widows:3}} *{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box}:after,:before{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box}html{font-size:10px;-webkit-tap-highlight-color:transparent}body{font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px;line-height:1.42857143;color:#333;background-color:#fff}a{color:#337ab7;text-decoration:none}a:focus,a:hover{color:#23527c;text-decoration:underline}a:focus{outline:thin dotted;outline:5px auto -webkit-focus-ring-color;outline-offset:-2px}h1{font-family:inherit;font-weight:500;line-height:1.1;color:inherit}h1{margin-top:20px;margin-bottom:10px}h1{font-size:36px}p{margin:0 0 10px}.container{padding-right:15px;padding-left:15px;margin-right:auto;margin-left:auto}@media (min-width:768px){.container{width:750px}}@media (min-width:992px){.container{width:970px}}@media (min-width:1200px){.container{width:1170px}}.row{margin-right:-15px;margin-left:-15px}.col-md-3,.col-md-6,.col-sm-4{position:relative;min-height:1px;padding-right:15px;padding-left:15px}@media (min-width:768px){.col-sm-4{float:left}.col-sm-4{width:33.33333333%}}@media (min-width:992px){.col-md-3,.col-md-6{float:left}.col-md-6{width:50%}.col-md-3{width:25%}}@media (min-width:768px){.navbar-header{float:left}}.clearfix:after,.clearfix:before,.container:after,.container:before,.navbar-header:after,.navbar-header:before,.row:after,.row:before{display:table;content:" "}.clearfix:after,.container:after,.navbar-header:after,.row:after{clear:both}@-ms-viewport{width:device-width}.businessup-nav-widget-area{padding-bottom:50px}.site-title{height:auto;font-size:25px;line-height:1;font-weight:600}body{padding:0;margin:0;font-family:Poppins,sans-serif;font-size:15px;font-weight:400;line-height:30px}a{text-decoration:none}body a:focus,body a:hover{outline:0;text-decoration:none}h1{font-size:34px;line-height:40px}h1{font-family:Montserrat,sans-serif;font-weight:400}footer .businessup-footer-copyright{padding:25px 0 5px}footer .businessup-footer-copyright p{font-size:13px;line-height:45px}:focus{outline:0}@media (min-width:768px) and (max-width:991px){.navbar-header{float:none}}@media screen and (min-width:240px) and (max-width:767px){.text-center-xs{text-align:center}}.screen-reader-text{border:0;clip:rect(1px,1px,1px,1px);clip-path:inset(50%);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute!important;width:1px;word-wrap:normal!important}.screen-reader-text:focus{background-color:#f1f1f1;border-radius:3px;box-shadow:0 0 2px 2px rgba(0,0,0,.6);clip:auto!important;clip-path:none;color:#21759b;display:block;font-size:14px;font-size:.875rem;font-weight:700;height:auto;right:5px;line-height:normal;padding:15px 23px 14px;text-decoration:none;top:5px;width:auto;z-index:100000}.site-title :hover{color:#09a945}.wrapper{background:#fff}body{color:#748182}.site-title,.site-title a,a{color:#09a945}.site-title a:focus,.site-title a:hover,a:focus,a:hover{color:#002954}h1{color:#212121}footer .overlay{background:#002954}footer .businessup-footer-copyright{background:#12223d}footer .businessup-footer-copyright p{color:#969ea7} </style>
</head>
<body class="">
<a class="skip-link screen-reader-text" href="{{ KEYWORDBYINDEX-ANCHOR 0 }}"></a>
<div class="wrapper">
<header class="businessup-headwidget">
<div class="clearfix"></div>
<div class="businessup-nav-widget-area">
<div class="container">
<div class="row">
<div class="col-md-3 col-sm-4 text-center-xs">
<div class="navbar-header">
<div class="site-branding-text">
<h1 class="site-title">{{ keyword }}<a href="{{ KEYWORDBYINDEX-ANCHOR 1 }}" rel="home">{{ KEYWORDBYINDEX 1 }}</a></h1>
</div>
</div>
</div>
</div>
</div></div>
</header>
{{ text }}
<br>
{{ links }}
<footer>
<div class="overlay" style="background-color: ;">
<div class="businessup-footer-copyright">
<div class="container">
<div class="row">
<div class="col-md-6">
<p>{{ keyword }} 2022</p>
</div>
</div>
</div>
</div>
</div>
</footer>
</div>
</body>
</html>";s:4:"text";s:13460:"Coil to end of dipole leg: 3.3 meters. Tunes & Performs Without Radials or Antenna Tuners. The antenna is calculated for a specific length, usually 1/4 wavelength. Here's another simple antenna to build in the back garden.SIDER POLE: https://hamradiostore.co.uk/spiderpole-12m.html As published in antennex Dec. 2001The 40 Meters band stealth vertical antenna by K7ZB. 669.95. Sometimes, all you can use for 40 m field work is a low-slung portable dipole antenna. for counterpoise I use a 17' piece of #16 speaker wire. Experimental measurements and calculations show that with this number, the loss resistance decreases the antenna efficiency by 30% to 50% for a 0.25 wavelength My vertical broke the pile in one shout. In this project the ground is composed by twelve 4, wires buried in the lawn by using a spade to create a slit to drop the wire into. Watch on. I am eager to put it up 85 feet in the air". As I stated earlier, I make use of a 20-foot collapsible fishing rod for the assistance mast of the shortened upright antenna. It has 11 taps at one end to adjust resonance, and the feed is to a small one-turn loop in the center of the coil. He emailed me later, " Your signal was a nice strong 59 ". The large diameter yields broadbanded coverage of the 80 Meter Band. This online calculator tells you how the amout of inductance your loading coil will need to have. Full length for 40 meters it stands 6 feet tall atop its 8" spike made from 1/4 inch aluminum hardware store rod stock. Even running less than 5W, this antenna is an effective communicator. 579.95. The caveat is that it is fussy and unique to each antenna situation. Each wire was measured out and bent in half to obtain the exact middle of each length. As all vertical antennas, also this aerial requires a good earthing system. The initial 40 meter phased array consists of two 10 foot high elements spaced one-half wave length apart. 95. 12, 15, 17, 20, 30, and 40 Meter, This multiband vertical des. Hustler 6BTV 6-Band HF Vertical Antenna and DXE Installation Guide Packages are trapped-vertical antennas that provide an omni-directional pattern. DX Engineering 40 Meter Fast Taper High Performance Vertical Antennas are self-supporting vertical antenna radiators that operate over the entire 40 meter band with an SWR of less than 1.5:1, and are less than 35 ft. tall. OD Antenna: Radio: Brand: GigaParts: Color: Black: Item Dimensions LxWxH: 50 x 3 x 2 inches: About this item . It is an off centre fed dipole, with 10 feet of vertical radiator. For instance, DX Engineering DVA Dual Vertical Array systems and four square arrays from COMTEK and DX Engineering or any other four . This shortened easy-to-build vertical, with no-radials, is made from surplus military camouflage poles. ~ 4 dbi @ 37 for 15 meters. Turning to my trusty ^antenna bible, the ARRL Antenna ook [7], I found the following: Practical Suggestions for Vertical Ground Systems At least 16 radials should be used if at all possible. "You're 30dB over 9 here". 20 metre delta loop HF antenna; Vertical HF whip antenna for 20 or 40 metres; 10/20 metre Yagi in the attic; 40 metre loaded dipole; Multi-band Inverted L antenna; Make a rotating VHF/UHF HAM SAT antenna array; 80 metre end-fed antenna; 40m Hamstick Dipole vs 1/4 wave vertical antenna; Spectrum Communication trapped dipole 20 & 40 metres The top-hat conversion factor for the true length is calculated as: 13097 X 0.8270 which equals 10832mm as the length of wire required. 6BTVs were designed as self-supporting verticals to provide efficient operation in the 10, 15, 20, 30, 40, and 75 or 80 meter bands. May 05, 22 09:45 AM Because of the COVID-19 pandemic, many radio amateurs will spend the 27-28 June 2020 ARRL Field Day at home with their home-based HF/VHF/UHF antennas. ~ 1 dBi @ 16 for 20 meters - nice low angle. Even though you may want to read all the reviews and ratings, we've already researched and compiled a list of options that can suit any need. This array was limited because the bidirectional radiation pattern . 5. I wanted high efficiency 40 Meter antenna with low-angle radiation. 3.7 out of 5 stars 27 ratings. Squalo antenna. For use on 80 meters it would be fairly short (63 feet or 19.20 m is the correct length for 3.7 MHz). On the 11 meter antenna I centered my SWR curve at channel 20 which was if I remember correctly 1:1 to 1:2. To the theoretical length (1/4 lambda) was added 4% due to the width of the antenna. On the inside of the pipe measure the wire to the second hole and make a notch/fold here. Tuning the COM-40VA 40 Meter Vertical Antenna is straightforward and intuitive. SO-239 port. My inverted-V at 40 ft. performs well, but is "a cloud (Enter "0" for a base loading coil.) The second is to get the center of the antenna up as high as you can and pull the ends out as far as you can get them. CONSTRUCTION DETAILS: The pole should be about 12m high (minimum 11m). This antenna is 58 ft tall and is mounted . 80-meters Short Base-loaded Verticals Frank Dorenberg - N4SPP This page is a collection of short vertical antennas that I built over the years, for the 80 mtr band. Vertical for 40 Meter Band 7 MHZ Homemade..I made a big mistake about this Antenne because the length from the Antenne and the Coil.This Antenne is now onl. This self-supported vertical antenna was made with aluminum tubes of 3 m in length that have an external diameter of 32 mm and a wall thickness of 1.2 mm. So lets get started. Distance from antenna base to the center of the coil in feet. With "short" I mean between 3 and 10% of . In the summer of 2010, I decided to construct a 1/4 wave 80 meter vertical using 3" OD Aluminum Tubing. English (Publication Language) Check Price. Electrical degrees are often employed as The total length of the radiating system is 10.33 m and its square-shaped base measures 25 cm on a side. Ideal for portable operation as well as base station use, the performance is great and looks professional. Patterns of 43 foot Vertical Antenna on the major HF Bands. RANK No. The whole thing weighs 10 oz. With base The Isotron Antenna. Shark HamSticks cover a single band, fiberglass mast measures 44" with integral coil and an adjustable (removable) 48" stainless steel whip. It is approximately 32 feet tall. Durable Construction, Can be Used in Extreme Weather Conditions. This is different from the original version. the lower HF bands with an outboard tuner, whereas other, tuned trap vertical antennas typically cover only 40 meters and some higher bands, but have little application, and typically no application on 160 meters. qty 8 4-40 stainless nuts. Next is the first upper section which is also a 1" OD tubing and kept at its original 11' height. Full 20 meter band coverage is available by simply telescoping the tubing to 16.5 ft. I decided it was not and started using the antenna is contests and general operating on 40 meters. That is a lot shorter than a standard 1/4 vertical. Bestseller No. This is different from the original version. I give a thumbs up to this antenna; I believe I am getting a lower angle of radiation. So lets get started. Here is a schematic of the 80 meter loading coil. Step 1: All of my 1" OD tubing is 11 FT in length. Many speaker stands have 1-3/8 inch (~35mm) masts plus an optional plastic sleeve to accommodate speakers with 1-1/2 inch (~38mm) sockets. This article describes a 40M vertical antenna director, but first we need to time travel to the distant past $44.95 $ 44. If you use an SWR meter or an analyzer at the base of the antenna you will get the most accurate readings in a timely fashion. Either they do not cover those lower bands, or they have such an unreasonably narrow useable bandwidth as to be nearly useless thereon. Enhance your purchase . It also works fine on all bands above 40m with a tuner, and even below 40m on 60m, and 80m, although the coax losses will be higher. This build provides a sturdy support for a 1/4 wavelength antenna. It needs no tuner on 40m, 20m and 10m. Easy, Quick, and Simple Installation. The small ground plane was another scratch build out of a need for a scanner antenna. its not really apparent from the photos but its also out on an arm from the mast. 6ft. Anything less than 75% of full-size is actually a real compromise. Click on the picture for enlarge and info. The feedpoint is located in either diagonal side near one corner of the antenna, enabling vertical polarization. Good for running a second radio and it gets me on 10m . The first is to get each end up as high in the air as you can so that the antenna is a straight line (it'll droop a bit in the middle). By John Portune W6NBC . However when working long-haul DX, it was consistently 1 to 2 S-Units better than my 40m dipole installed at 40 ft. There are no traps, coils or linear loading elements to rob power. CONCLUSION: If you are interested in working low band DX and back yard space is scarce, this is antenna well worth consideration. End Fed Half Wave Antenna 10 and 20 meter. DX Engineering 40 Meter Fast Taper High Performance Vertical Antennas. = 7 meters each leg + length of the coil. . COMTEK 40VA Vertical Antennas are rugged, yet economical quarter wave antennas designed primarily to be used in sets with phased vertical array systems. Homemade Carolina Windom antenna. A Portable NVIS Antenna is QRP-Friendly. Solve Virtually Any Restricted Space Problem - 40 Meter Isotron only 22 inches x 16 inches x 15 inches! Shopping basket. My Homemade VHF/UHF Dual Band Vertical Dipole Antenna. From David, N5IZU From David, N5IZU Portable All Band Antenna -- "IK-STIC" -- a multi-band vertical dipole antenna which can be used in the field for quick set-up and quick band change. Specifications: Coverage: 10, 12, 15,17, 20, 30, 40, 80m Max Power: 1500 Watts PEP Input Connector: Lug Height: 18 feet Weight: 4 pounds Wind Survival: 80 MPH Mast Size: 1.5 in - 1.625 in. Enter a length between 1 and 250 feet. See physical description below. . Selecting a 6 meter vertical antenna that suits your needs has never been easy. It was originally made with a vertical in mind . View details Hy-gain Patriot Vertical HF Antenna-AV-640. $400.00 to $500.00! Best prices, in stock. 14 GA Romex cable. Squalo 2 meter, 144 MHz and 6 Meter, 50 MHz antenna. Designed with 6063 corrosion-resistant aluminum tubing and stainless steel hardware, this . When the dipole is installed horizontally, at about one meter (3-4 feet) above ground, you effectively get a NVIS low-noise dipole. It has gain and wave angle comparable to a full-sized ground plane antenna with radials . qty. OUT OF STOCK. 80 Meterr Vertical Antenna. It is 9" in diameter, 8" long, and has 17 turns. 4 4-40 stainless screws. 3/4 THD Dome Cap. Super Antenna MP1DXMAX Low Profile Tripod 80m-10m HF +2m VHF Portable Antenna with Go Bag ham Radio Amateur. Installation Considerations. Coax fed OCF 'Windom' antenna. THIS IS: Super Antenna Low Profile tripod Go Bag setup for all HF Bands 80m-10m and simultaneous VHF 2 meters. My 40 meter vertical cost me $13.66 in total. Total height of antenna in feet. This antenna is a full-size quarter wave on 40 meters and it is 1/8 wave on 80 meters. The slope can be adjusted as needed to obtain the best match to the cable. Starting with the bottom section of the antenna, a piece of 11 foot aluminum tubing was cut down to 6'. The most common antenna used in ham radio mounted over poor desert soil conductivity . Making up this basic vertical HF whip antenna is pretty straight forward, cheap to buy and consumes very little room. This is not a new idea, but the method I am suggesting of doing it is novel, and possibly simple to implement ! The 10 Best 40 meter vertical antennas of 2022: Latest Trend, Top Rated and Reviews. Pull the wire out straight, cut it and scrape the enamel off. This $13.66 antenna (not $495) has met and exceeded expectations . Starting with the bottom section of the antenna, a piece of 11 foot aluminum tubing was cut down to 6'. Most of the parts can be found in your junk box or at . The peak radiation angles and relative antenna gain for each bands are: ~ 5 dBi @ 57 for 10 meters - impressive, but high angle. My stacked dipole worked great on 10, 15 & 20 meters but when I tried adding a 40-meter element, it was too big. There are two ways to mount the antenna. Handles Up to 1000 Watts PEP. Given the current sunspot conditions, most of the bands are pretty "dead" after dark, with the . This coil will act as an inductive load for 80m and a trap for 40m. "I enjoyed putting these pieces together from MFJ Hy Gain, MFJ Cushcraft, Texas Towers, M2 and our local hardware store to make an antenna which should last along time. 2010. The loading coil is constructed from 1/4 inch copper tubing, and supported by a structure made from PVC plumbing parts. If you need a simple, inexpensive 20 meter vertical antenna that works, try Rob's ("SevenFortyOne") idea outlined in this excellent video. I desired it to be self-supporting, so it . There is nothing new here, although it maybe useful to see all the items together including the mounting method which . 50 ohm coax Length to match. Thanks to Steve (KA0SPM) for this "portable" 40 Meter Vertical Antenna project. ";s:7:"keyword";s:34:"homemade 40 meter vertical antenna";s:5:"links";s:1570:"<a href="https://api.o91.coding.al/pxzjxi/silicone-dish-drying-mat-white">Silicone Dish Drying Mat White</a>,
<a href="https://api.o91.coding.al/pxzjxi/wolf-pack-series-cast">Wolf Pack Series Cast</a>,
<a href="https://api.o91.coding.al/pxzjxi/2002-chevy-suburban-engine-replacement">2002 Chevy Suburban Engine Replacement</a>,
<a href="https://api.o91.coding.al/pxzjxi/ring-stick-up-cam-blue-light-keeps-flashing">Ring Stick Up Cam Blue Light Keeps Flashing</a>,
<a href="https://api.o91.coding.al/pxzjxi/hawkins-stainless-steel-pressure-cooker-6-litres">Hawkins Stainless Steel Pressure Cooker 6 Litres</a>,
<a href="https://api.o91.coding.al/pxzjxi/jobs-for-15-year-olds-detroit">Jobs For 15 Year Olds Detroit</a>,
<a href="https://api.o91.coding.al/pxzjxi/endless-festivities-rose-gold-sequin-fringe-lace-up-maxi-dress">Endless Festivities Rose Gold Sequin Fringe Lace-up Maxi Dress</a>,
<a href="https://api.o91.coding.al/pxzjxi/adhesive-rhinestones-michaels">Adhesive Rhinestones Michaels</a>,
<a href="https://api.o91.coding.al/pxzjxi/lace-boot-socks-shark-tank">Lace Boot Socks Shark Tank</a>,
<a href="https://api.o91.coding.al/pxzjxi/loops-and-threads-cozy-wool-merino">Loops And Threads Cozy Wool Merino</a>,
<a href="https://api.o91.coding.al/pxzjxi/women%27s-lightweight-zip-up-cardigan">Women's Lightweight Zip Up Cardigan</a>,
<a href="https://api.o91.coding.al/pxzjxi/newborn-baby-tracksuits">Newborn Baby Tracksuits</a>,
<a href="https://api.o91.coding.al/pxzjxi/men%27s-wearhouse-french-cuff-dress-shirts">Men's Wearhouse French Cuff Dress Shirts</a>,
";s:7:"expired";i:-1;}
Mini Shell