homemade cb antenna plans Our plans include full details on mechanical assembly, matching, element dimensions, etc. This is due to the exceptional low main lobe, nearly flat, angle of radiation of about 1-3° degrees. A compact, easy-to-build shortwave antenna The Broomstick Special. As shown below, you can use 2x4 lumber to make a simple slab form and support the tower base while pouring the concrete. 1:1 Voltage Baluns and Lower Loss Coaxial Cable. At the back of the antenna ,is a length of PVC pipe placed there to keep the antenna from spinning. You can purchase the best ham transceiver on the planet, but if your antenna system is poor, your investment will largely go to waste. 5 foot grid of wires with 1″ grid behind the modern zigzag driver; The actual grid is 1/2 inch, but 4nec2 coughed at so many wires; Yes, the smaller grid does make a small difference. 99 $ 52 99 $72. Take one of the rods and using the #80 sandpaper, sand one inch of the rod on one end. G0KSC designed 3el, 40M & 6el 20M (Force 12) This antenna uses the G0KSC OP-DES design on both 40m and 20m to provide full-band coverage on each. My Loop Antenna November 20, 2013 21 To Measure The Efficiency of a Vertical Antenna Phil Salas AD5DX shows how the The antenna is located at the bottom left corner of graph. The "J" is the BEST antenna for flat-lander’s giving the user the most signal distance possible. This isn't a set of step-by-step instructions, but my info might give you some ideas for building your own antenna support. Here’s another 11 meter Moxon Antenna plan suitable for 27MHz CB, Freeband and lower 28MHz Amateur Radio operation band. Using a sharp edge, strip the outer insulation material from the wire. Simple wire antennas are quite allright, but using them to do well in a contest is pretty hard. It can be constructed from inexpensive materials at HORIZONTAL LOOP ANTENNA CONSTRUCTION . Cut the Cable! Build Your Own Digital TV Antenna Cable bills busting the budget? you may be missing out on free TV. This antenna is unique in that it is enclosed entirely in 3/4" PVC which makes the design a little more complicated. I currently own a couple of hand held CB's and plan on getting a mobile or base station CB. Electromagne2c' Wave'Polariza2on' • Electric'and'magne2c'waves'are'at' right'angles'to'each'other' • Magne2c'wave'dissipates'within'a' few'wavelengths'of'antenna For use in the middle of the CB band at channel 20, a 1/4 wavelength antenna would be 9 feet long. It has a nominal 3 dB gain over an isotropic source and is directional, tending to favor signals broadside to the wire. And tilt the wires to the right 45 degree. This antenna is similar in construction to the 2-meter OFC sleeve dipole I built over 8 years ago, but it is a simple center-fed dipole. Dual Band (2 Meter/70 cm) Solid Aluminum J-Pole. You have just built a Vertical CB Dipole Antenna, that needs NO Grounding, or other constructs, to work. It's a new product, can recieve exce A Stealthy Homebrew Vertical Dipole Using Mobile CB Antennas. com article by John Reisenauer (KL7JR) titled Simple and Inexpensive Dipole and V Antenna Mount. The design looked right, but only by making one could I find out how good it was. 34 July 1999 In a matter of a few hours, you caneasily build a broadband, 2-meter Yagi—complete with mounting hardware—for $20. Base or mobile. An easy project I was able to tackle in one day. Depending on your preferred range, you can do this by using either coaxial cable or speaker wire. By comparing them, you should be able to construct a tuner to your own particular requirements. On the webpages www. All plans are designed by Ben Stone. Only 17 left in stock - order soon. antenna efficiency via the formulas (spreadsheet). as realized by When I searched on “AM radio antenna design”, the best result I found was How to Make the Ultimate AM Antenna by R. Building your own Antenna Analyzer by ZS1JHG. By "properly dimensioned" I am referring to an mclapp design - just search a bit here and on other forums and you'll find much info. Based upon thirty-five years of experience in the personal communications business, we believe that 95% of your questions will be answered by one or more of the documents. Gain is about 2 dBd 15 degrees above the horizon. Big antenna, big signal! At almost twenty-five feet tall this is one monster of an antenna! This 11 meter j-pole antenna has a little more gain than the ordinary half-wave end fed vertical or vertical dipole and can help increase your signal strength. An antenna ground plane is not to be confused with an electrical ground. And you’ll also get information on building a second type of CP antenna, as well as a 3-element Yagi beam antenna. This mast is made from 3 pieces of abandoned thin-wall irrigation piping that can be obtained for a song from any nursery or farmer. Gingery Yup! Ole Dave’s at it again! This time he built himself a 35’ tall free standing A Stealthy Homebrew Vertical Dipole Antenna Using Mobile CB Antennas Written By: Scott Wolfington The following article is based on a HamUniverse. This antenna is a highly modified version of the DK3 designed by W6AAQ. If you do anything differently or better, be sure to leave a comment in the blog The traditional collinear J-Pole, aka Super J-Pole Antenna, improves the basic J-Pole. 5" Magnetic Mount CB Antenna This is the ultimate stealth antenna and its a vertical. How to Install Universal Antenna Towers -- Palco Electronics. Here is where base-loaded CB antennas usually work well. If we look at antenna books and articles about quad antennas, we will often find references to quad antennas having 2 dB gain over a comparable boom length yagi antenna. Important supplies include single-strand wire, cardboard, tape and a wire stripper. VHF/UHF Quad Antenna The information in this article has come from many amateur sources, the most notable was from WA6TEY (sk 1985) Ray Frost , who was a pioneer of VHF Quad designs and one of the best The CB Radio Club - Probably the best CB Radio Community site on the net, a whole host of features are there such as a great forum, CB radio groups you can join or start, Reviews on equipment, Free Classifieds, shack slideshows, Specializing in the sale of CB radios, antennas and CB vehicle kits. But if you wish information on designing and/or building an antenna, (for whatever band/frequency) there are VERY GOOD resources available, including the ARRL (American Radio Relay League) Handbook, and the ARRL Antenna Book. I've decided to try my hand at building my own whip antenna. Small Gauge Wire Makes an "Invisible Antenna" The Wireman sells #26 AWG "Invisible Toughcoat Silky" antenna wire which is a stranded & coated copperweld type, his catalog #534. Product Description. This project is obtainable from the South Coast Amateur Radio Club in Australia for AU dollars 150 in kit form or as an alternative you can order the PCB and Picaxe microchip pre-programmed. Simple CB Base Station Antenna: This is a simple base station CB antenna You can make in 30 minutes out of a bit of PVC pipe and fittings, some wire and a SO239 coax connector and a piece of coax to connect it to your radio. 000+ links organized into 600+ categories and subcategories. During installation of a Business Band, CB, Ham or Marine radio or installing a new antenna, the SWR must checked to ensure the transmit power coming from the radio is traveling through the antenna system correctly. An Article Written By Tech237 ~ Simon The most practical and simple to make Long Wire Antenna is the resonant variety. Spring time brings antenna fun again. The vertical axis points strait up and the horizontal axis is level to the ground. The size doesn't have to be exact. The heart of any radio station, be it Amateur Radio, Commercial, Business, CB, Personal Family Radio, or experimenters in extremely low power amateur radio ( QRP as it is called ) transmissions IS the antenna! Another antenna that is very simple to make out of spare parts is the 1/4 Wave Ground Plane. This is the reason the antenna is nearly 50' tall! The construction of this antenna took about 12 hours, and I would consider it to be a good "new Ham" project, because it was easy to build, hard to mess up, and relatively small. Antenna Tuners. The Horizontal Loop, also known as the Loop Skywire Antenna, is an old but very effective design. Mount using regular channel CB’s as this is channel 20. Check out the comments below to see how people have modified our design, and the success some people have had. CB antenna & Car Antenna with Frequency from 470-860MHz (Outside install) CB antenna & Car Antenna with Frequency from 470-860MHz (Outside install) 1. Contrary to what lets believe diagrams above the two tubes of the trombone are not to dish " but disposed perpendicularly to the axis of the antenna. The Y-Quad may be mounted on a l-1/2” O. a lightweight Home Brew Basics Starting with the dawn of amateur radio, it was the rule (not the exception) to build your own gear, including transmitters, receivers, antennas, amplifiers, and even test gear. Stealth antennas for the loft Fig 4. As this antenna was new to me, I got a few of these stations to rotate their beams so I could see the front-to-back ratio. One of the components most commonly used in projects out at the Eco-Village is antenna truss . If you're looking for a low cost solution for a portable hamstick antenna pole for your ham radio, then check out this video. Antennas. Antenna Types. A homemade radio antenna can help improve quad antenna, how to build a quad antenna for ham radio use is a curation of 111 resources about , Shrunken Quad, Two portable antennas for 6-meter, ZL3RG 30 Meter Quad, The DK7ZB-Quadlong antenna, Multiband Cubical Quads. Citizens Band Frequencies and CB Antenna Requirements Citizens Band frequencies are at the top end of the high-frequency band, or stated another way, just below the bottom end of the VHF band. If mounted on a guyed tower break up the guys every 3 feet by using egg insulators in the guy line for the top 20 feet of the guy cables. You can build your own 5/8 wave antenna with 3 -8ft long sections of hollow aluminum pipe. At VHF, both the 1/4-wavelength monopole and the 5/8-wavelength monopole antennas are widely used. A larger loop and more wire increases the range. Building a homemade CB antenna requires a little skill, a lot of patience and a few vital materials. This wikiHow teaches you how to create your own FM antenna in order to increase your FM receiver's range. 5mm) instead of 15mm. This tilt over tower is designed to support up to 6 square feet of wind load at 76 feet above ground. SIDE NOTE: you may notice the model numbers of some of our antennas have weird letters at the end. section of the tower to the steel base anchors and lower it into the hole. It is a directional CB beam specifically engineered to be lightweight, easy to setup and operate while delivering the great performance of a True Quad. Attach a Coax end to the other end of the coax coming from the antenna. Because many ham radio operators, all over the world, like to experiment with homemade antennas, I felt I should share with you here my favorite sources of information for the antenna "home brewing" enthusiast. Antenna farm on left. Viezbicke Thisreportpresentsdata,usingmodelingtechniques,fortheoptimumdesign ofdifferentlengthYagiantennas The collinear antenna is designed to be mounted vertically. 17' Omni-Directional Fiberglass Base Station Antenna - 2000 Watts. us and www. A schematic for a simple crystal radio might look like this if drawn on a napkin at a party: The symbol for a coil looks like a spring. 049") 6061-T6 aluminum tubes and I was thinking about just building my own 4 or 3 legged tower. A dipole is basically a length of conductor (wire) split into two portions and signal is taken off at the split. $52. we also made dipoles out of brazing rod. How to Make the Ultimate AM Antenna Carver Corporation of Lynnwood, Washington once made the ultimate AM Stereo/FM Stereo tuner, the Carver TX-11b. What a bad mistake that was! The butternut antenna I once own was a 5 band vertical and work really good considering I did not have any radials down, and did not have the space to put any down. A free-of-charge service at antennaweb. I once own a butternut antenna and sold it. This horizontal “slot” antenna, cut into the reflector of a TV dish, is both the master of disguise and high in performance. You're looking for a can between about 3" and 3 2/3" in diameter. Yes you can build an Antenna Analyzer that will outperform most commercial units. nl you find more information. If mounting it outside, be sure to wrap the N-connector appropriately in self-amalgamating tape to prev A ham radio antenna project with plans, pictures and parts list to help you build a fan dipole. 5m of aluminium (old tv antenna booms) screwed/riveted together (well that was a mates, mine was a little more dodgy due to a shortage of aluminium and used steel fence droppers pop riveted together to make the rest of the length (just needs to be metalic). Make a homemade AM radio antenna by creating a loop of thin gauge insulated copper wire around an object used as a holder and attaching each end of the wire to the radio's antenna leads. All the loops described here were designed and built by myself. A 5/8 wave ground plane antenna with the base of the antenna starting at 72 feet is an amazing performer on the CB band. The 18-258 Midland is a seven-Megahertz universal antenna with a unique stainless steel design for ease of installation. I plan on having the CB's to compliment the ham radios. Wagoner. This antenna is designed for mounting on a l-1/2” O. The diagram below shows the basic arrangement of the 2m Half-Wave version of the antenna. You'll also see that the SWR will be near perfect on channel 20. The features are not real different from loop to loop. Frustrated by years of expensive cable bills, Norm Sutaria ditched his set-top box and used online instructions to build a homemade HDTV antenna. Antenna Terminology Defined. The performance of this tuner was nothing short of spectacular on FM; the AM side was even more impressive, as it was designed to have an audio bandwidth of 20 Hz - 15 KHz -- the same as broadcast FM! The OP antenna on a roof (constructed with better materials) will do better than the 'old school' antenna and can be constructed for less than $80. In ideal cases this ratio should be 1:1, but in usual cases values of up to 1. The J-POLE has been around since the early days of HAM Radio, and is a direct descendant of the "Windom" Like the Windom or ZEPP, the J-POLE is a spin-off, or a modified WINDOM for VHF and UHF. Vertical or directional. I put a small bend at the top of my center conductor and tied a small loop with fishing line to hang it with a thumbtack. Variations A number of people have suggested the spacing between the element and the rear reflector should be a 1/4 wavelength (ie, 30. Transmitting or receiving. Check out the plans for building your own. The radiation pattern of the antenna on the right shows a quad using a device (balun, gamma match etc. Made from some good quality RG58 coax with similar construction/theory to a centre-fed dipole or Bazooka - this really simple antenna is ideal for rapid deployment, portable operations, holiday My first CB antenna was a Antron 99 which I haphazardly mounted on top of a 75 foot cedar tree after making a death defying climb. BUILD AN HF ANTENNA TUNER MAKE A HOMEBREW HF-VHF ANTENNA TUNER (It really isn't all that difficult. 99 Prime. D. 7) Exaggerated antenna gain claims for single element omni directional antennas. • An antenna tuner (coupler is a more correct term) is an impedance matching device which minimizes • Coupler/antenna as a system (military & aircraft). Ham Universe. Although this unit does well with just 2-31' radials, I built one for an neighbor ham and he has just the two radials. com article by John Reisenauer (KL7JR) titled "Simple and Inexpensive Dipole and V Antenna Mount". " The THE HALF WAVE VERTICAL. HOW TO BUILD A 35’ TILT OVER ANTENNA TOWER by David J. Homemade 1:1 balun using a toroidal core and coaxial cable. The smaller one, C1, for fine tuning, and the larger one, C2, for coarse tuning. Site also hosts library of educational CB articles. . Amazingly strong for it's size, very abrasion resistant and you have to go looking for it if you're more than twenty feet away from the stuff. J Poles. 00 US and if you do all the labor manually you will invest about two man days in the basic construction and installation. Homemade DTV Antenna In June of 2009 the government-mandated switch to digital television (DTV) went into effect in the United States. I have about 16 radials out plus a 30' X 5' wire mesh buried under the grass beneath the antenna. The wavelength of the 27-MHz CB band is a little over 17 feet, or 204 inches; to send and receive CB, use two halves of this standing wavelength, or two 102-inch lengths of copper The design of this antenna is derived from common antenna theory and is based on it's intended operating frequency and the appropriate formulas as known in antenna engineering. An antenna can then be placed at the top of the tower, clear from the interference of trees or other obstacles. How you connect them is the major flaw in the theory you Ok People, I am not new to CB or antenna building, I just want to hear what DIY antenna you are using and if you could supply a link to the plan or describe it that would be great. Materials will cost approximately $1500. Various specifications given as examples are rough estimates, some with Efficient 2 meter Disguise Antenna . 97/can ) This will help to protect the PVC from UV deterioration. Simple antenna tuner. How to Build a Vertical Dipole for CB Radio (27 MHz) Below is a photo of the basic vertical dipole model (this particular wire dipole design is also formerly known as an elevated quarter wave ground plane antenna) that I personally drew up! This homemade cb radio antenna can be used for base station or portable operation. Over the last few years, I have heard guys using Hexbeam antennas. Here’s an award-winning, easy-to-homebrew, multi-band portable vertical antenna designed by long-time antenna aficionado James Bennett, KA5DVS. When folks began stripping CB's out of their vehicles in the 1980's, they usually pulled the coax cable and antenna off the vehicle and put it with the CB radio in storage. This antenna may be built as a 20 meter, 17 meter, 15 meter, 12 meter or 10 meter monoband vertical The Ground Plane vertical omni directional antenna is very easy to build with just some #12 solid copper electrical wire and a UG58 type N chassis jack. But don’t be misled – just because they are easy to make doesn’t mean they don’t work well. BACKGROUND: People have been asking me for the last 20 years to publish the plans for my very lightweight 55 foot portable APRS push up antenna mast. With this change comes more channels along with DVDquality picture and sound. The light green line is the simulation response of this particular antenna design at 566 MHz using a 3 x 4. Homemade WiFi antenna is a great way to extend the range of your WiFi network. The goal here is to put up a cheap, easy, and quick 2-meter antenna that is simple and unobtrusive, but works quite well. Just what is a dipole antenna, and why are they so popular? By James W. Whether you have a balanced, unbalanced, or single-wire antenna, our antenna tuners offer impedance-matching capabilities for more efficient power transfer. You will need enough cable to run from the antenna up on the roof down into your house; most TV-type coaxial cables will work. Try these homemade antennas for just a couple of bucks. VHF 5/8wave vertical antennas RE-A144V58/1 By Guy, de ON6MU. The hexagonal beam (or known by many as the hex beam) has become a wildly popular antenna. A folded dipole is an efficient TV antenna that is easy to construct. . The secret formula I will leave for the history books. A metal surface (the larger and flatter, the better) is required underneath the CB antenna to launch the signal out into the atmosphere. Monoband or multi-band. The 5/8-wave antenna. When constructed according to the plans, this antenna will comply with the generally accepted interpretation of FCC Part 15 section 15. These antennas can be purchased through CB shops and at retailers like Radio Shack. 2(a): You can see that when erected in a straight line the dipole is quite directional. Two trimmer capacitors are available for tuning the ATU. The difference is obvious, the pattern of the 1/4 wave is almost round and the pattern of the . When you are done, it should look like the photo on the left. Op's antenna gets over 25 stations indoors without a beast on the roof. 2 Meter 5/4 Wave antenna in PVC case Mike Martell N1HFX. This antenna is a "Quarter Wave Dipole" with Ground Radials. In Case B the hat is placed at the top of the antenna; like top loading, it is designed to increase the current flow in the upper part of the antenna; top hats make the antenna unsuitable for mobile operation but can improve antenna performance. The antenna is located at the bottom left corner of graph. Home Made Antennas. TV Antenna, 1byone Amplified Outdoor Digital HDTV Antenna 85-100 Miles Range with VHF/UHF Signal, Built-in High Gain and Low Noise Amplifier, Mounting Pole by 1byone $35. This antenna is widely welcomed by clients all around the world, it's very hot 2. No matter what type of antenna or antenna system you need, you’ll find it at DX Engineering. He’s documented the design and construction plans for a portable antenna The plans call for a piece of RG59 to match with the RG58, can I just skip that step and use RG58 and an antenna tuner? Would it be better to use the RG59/RG58 and then use a tuner? Is this antenna a waste of time? John Park shows how to make a Digital Television Antenna. I've looked at the all metal tilt over mast using schedule 40 pipe, and that remains an option. Figure 5 - The radiation pattern of the antenna on the left is a 4 element quad feed directly with coax. 6m 4-Element Quad, KG4JJH Page 1 of 5 6m 4-Element Quad Antenna Build this portable short boom beam with over 8 dBd gain. Hand Built Simple Dipole Antennas Made With All American Parts. Making your own CB mobile antenna requires a basic understanding of the frequency used by CB send and receive radios. For our customers with more severe weather, we offer the 6M7JHVHD. YAGIANTENNADESIGN PeterP. Your first antenna – the half-wave dipole. All you need is two rabbit ear antennas from Stryker SR-A10 Mag Mount CB Antenna Important Features Includes For battling with drizzle as well as with snow, ice, and water, Stryker SR-A10 CB Antenna is always ready for it. This is a "helically wound" wire antenna. Make the wire ends about 10 mm longer than calculated, and tune the antenna by cutting a couple of mm at a time. For height, try to get above everything around you. Mostly these antenna are a waste of time to try to build you will get little or no advantage especially when you build them out of junk. Building a Quadrifilar Helix Antenna for Undergraduate Researchers Introduction There are many different antenna designs for capturing images from weather and other low- A Practical Long Wire Antenna for CB ~ 11 Meter Use. It is an off centre fed dipole, with 10 feet of vertical radiator. As the popularity of radio (in general) grew, manufacturers filled part of the need by supplying receiving gear. In the tutorial, you'll find out how to make this temporary mount that can be used when going out into the wild or just hanging around your home. Use 8-inch 3/8 tube connector (G-1) for Horizontal Gamma Match. The Mystery antenna, on the other hand, presents a six-lobe pattern on 20 meters, gain broadside to the antenna, and also low feed point impedance to simplify matching the antenna to the rig. Ham radio antennas plans and guides to antenna modelling, with antenna theory and online calculators. Building Simple Antennas. I started acquiring specialty PVC fittings and used them to build a Ham radio antenna called a Two Element Cubical Quad 10 or 11 meter beam. multi-band antenna. This easy to build dual band VHF/UHF antenna makes a great project for the new ham that is ready to get on the 2 meter and 70 centimeter amateur radio bands. This will determine both how much of the coaxial cable you Step. homemade plans Welcome to the CB junkies cb radio forum You are currently viewing the forum as a guest. Additionally, the Mystery antenna is designed to work at least as well, on the other HF bands as a G5RV. Here is a cranking antenna for the CB band and 10 meters. A coaxial cable makes the most important ingredient for your antenna. 3 The current flowing through an antenna’s radiation resistance when squared and multiplied by that resistance determines the amount of power that’s actually radiated. Half-Wave Flower Pot Antenna. Building a basic 162. ("Bus") Healy, NJ2L antenna and transmission line and therefore increased voltage standing wave ratio (VSWR). 3:1 and good efficiency. Home > CB Antennas > Magnetic Loop Antenna Homemade Magnetic Loop antenna for 27 MHz. Calculate the length of your antenna. An Hexagonal Beam in 3 hours. It is very easy to create a simple 1/2 wave dipole, all you need is some lengths of wire such as the core of some mains flex or even a straightened out metal coat hanger, some co-ax cable and a connector for your scanners antenna input (usually BNC or SMA). Shop with confidence. 64 is much flatter the difference in gain is almost 4 dB. Match your transmitter or transceiver to virtually any antenna with antenna tuners from DX Engineering. Details the most common types of antennas used on 11 meters. I was looking for an antenna design for a repeater antenna. ( The 80 meter version was used for Field Day 2006 in Olympia, WA by the Olympia Amateur Radio Society) If it really has 11. For those with cancelled satellite service who’d consider using the left-over roof-mounted dish as an antenna base, consider this plan from the folks at Instructables. If you don't have an antenna up for 10 meters, here are some antenna projects for you to try and see what all the 10 meter fuss is about. Probably the best know antenna on our 11 meter band ! Everyone has used this type in the past or will use it somewhere! How to Build a Multiband Scanner Antenna Carefully mount the SO-239 connector in the table vise so that the male side of the plug is facing upward. A simple dipole antenna can be used for improved FM broadcast signals. The antenna presented here covers all ham bands from 40 to 10 meters, and everything in between, with a maximum SWR of no more than 1. 4. I have many 12' x 1. Spiderbeam was founded in the year 2000 by DF4SA, sparked by his passion for highly competitve radio contesting during portable, outdoor operations, fielddays, DXpeditions, etc. Radio users can make their own homemade AM radio antennae by winding a coil out of single-strand wire, grounding the wire and putting a portable radio near the coil. About The DXZone The DXZone is the largest human created and maintained library of web sites dedicated to Amateur Radio, currently lists 20. Just hang it and talk. Superposition of forward and reflected waves along the transmission line produces standing waves resulting in maximum and minimum voltage amplitude locations. ) This page details several T-match tuners. By Arnie Coro Host of "Dxers Unlimited", Radio Habana, Cuba. 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. 5" from the ou BUILD THE "COBRA" ANTENNA By Raymond A. The material in this article is derived from The ARRL Antenna Book, 1957, 1974, and 1999 editions; Army Field Manual 24-18 and others, several QST articles, and various web articles written by other NVIS experimenters and HF antenna and propagation experts such as W4RNL. 219 governing antenna dimension restrictions . HPSD. 5:1 are OK. It is a directional antenna that provides great performance and does not require a full scale, expensive tower. This simple RF choke works as a balun by preventing signals passing along the outside of the braid. heavy duty mast. Built for Ham Bands from 2 Meters thru 80 Meters. Hamtech. The conduit radome provides a robust and sturdy enclosure for the antenna, and if required, it can be mounted outside in the weather. Ham Radio & CB Dipole Antennas for DX and Distant Contacts. More frequently, people opt for a shorter version which incorporates a "loading" coil at the base of the antenna. The reflector is positioned behind the driven element, where it acts as a mirror by bouncing signals from the satellite forward to the driven element. The construction plans presented in this newsletter are based on my new design, and describe such an optimal antenna. How about making the coat hanger uhf antenna's receive vhf as well. For example for the VTX antenna, I put them about 120 degree apart, and for the VRX antenna, that should be approximately 90 degree. Find great deals on eBay for cb ground plane antenna. PVC Ham Radio Antenna "The picture is an Amateur (Ham) Radio antenna that is about 90 percent PVC pipe and fittings. Get it at Radio Shack or a Get it at Radio Shack or a truck stop; they are big CB fans and the stops sell this cable with the PL259 already The later antenna I made was 5. you may be able to make a antenna out of a mobile cb antenna by taking the loading coil out and trimming the stinger. Boost your reception with this monster homemade antenna. Here we have collected some links to building instructions for 11m antennas on the Internet. This winter looks to be a good one for 10 meters, so put up a simple antenna and work some great stuff! Assemble Gamma Matches per diagram. The design I wanted was something that was grounded to help prevent static buildup problems, was easy to build and could be duplicated over and over without redesign. Make the simplest, cheapest, easiest NO GROUND PLANE CB base antenna in the world in 6 easy steps! Make a rope eye on one end with about 6" of extra length twisted around the long part of the wire. com. So Antenna Elements: As previously mentioned the best wifi antenna is the one that suits your needs, so we’ll be covering 2 different designs of antenna elements that each produce a specific result, just read through and match up the best homemade wifi antenna that fits your situation. A simple version can be made from cardboard by cutting out two The Collinear CB Antenna is actually two x 5/8 wave antennas vertically stacked and phased together, to double their low takeoff angle gain. Source your parts. This method of construction can be used on most UHF through "low" microwave Yagis, and is especially useful for the 33, 23 and 13 cm bands; These antennas were made with this process, and tested on this back-yard antenna range. The concept of a ground plane is roughly to build a antenna half as long as a normal self-contained one, then add a mirror so that it looks like a complete antenna from the antenna side of the mirror. Schematic fig1. I realize they're not really expensive to buy, but this is mainly for my own enjoyment of building a working antenna for my new Mirage MX-36hp (modified to operate on the 11m band CB channels. The symbol for an antenna looks like someone used a coat hanger. Here is my home HF antenna. Find out how you can build WiFi antenna and increase the range of your wireless network almost for free. A critical tree that was holding up the end of one of my wire antennas died, so I decided to replace it with something more permanent. Plug the Pl-259 into your CB Radio Antenna Connector, (SO-239) and mount the 20ft PVC Pipe Vertical, at the bottom, and start talking. Build a Long Range Antenna for $20 If your television reception is poor to nonexistent, take a stand with this long range antenna you can build yourself. But this design yields excellent results compared to many other dual band antennas. The antenna uses a dipole says " trombone " that is the only element a few delicate to achieve. The statement often made is a single quad element has 2 dB gain over a dipole, and that 2 dB gain difference carries over into arrays of quad elements. Take the completed antenna outside and give it several light coats of spray paint (I use Gloss Black Walmart $0. Multi-Band Dipole I built a multiband dipole that will work and 10 meters for ham radio. This calculator is designed to give the vertical length of a quarter-wave ground plane antenna, and the length of each of the four radials for the selected frequency you have entered. I originally wanted an antenna that would not hit everything overhead while driving, since it was to be installed on a van. Be aware that the FCC can order you to cease operations if you cause interference to any commercially licensed station. the government plans to auction off TV Channels 53 to 68, not by Kent Britain, WA5VJB A Cheap And EZ HDTV Antenna Project Photo A. Materials Needed: 1 - 6" x 6" piece of aluminum. by K40. By James W. A typical mobile CB antenna does not transmit horizontally, it radiates in a downward pattern. CB is nice because it's unlicensed and I can hand a radio to any friends or family. Why is an SR-A10 Mag Mount the best choice?. The antenna offers a gain of about 10 dB, is To check the correct adaptation of the antenna, a device called SWR meter needs to be used; the achronim comes from Standing Wave Ratio, and it will determine the ratio between the transmitted power and the radiated power. If you have tall trees then sling the antenna up there and enjoy. org will then help you determine the direction in which you should point your antenna to get the best TV and radio broadcast signals. The 5/8 wave antenna consists of a vertical radiator which is fed at the base of the antenna. Since remotely adjusting an antenna while driving could be dangerous, I included fully automatic tuning, commanded from the transceiver. The tower itself is at a height of 44’ to allow the apparatus (antenna or wind turbine) to be mounted an additional 6’ higher using the apparatuses own mounting hardware. 69 $ 35 69 Prime Learn how to build an antenna truss with this diagram and detailed instructions. (1) antenna mount with internal threads to accept 3/8″-24 antenna element I used a Radio Shack CB antenna mirror/luggage rack mount because it was the only antenna mount available locally. If you plan to have your antenna near your shelter you can usually make the coax cable from the original vehicle setup work just fine. 1 - 18 3/16" length of number 12 wire An antenna with a wider beamwidth, such as a biquad, doesn't require the same precision for alignment, thus making it easier to get a link working. Use a VSWR meter to check the desired band edges and centre frequency as you tune. This should be low cost, and is a homebrew coaxial dipole built from a small stainless whip, a length of threaded the antenna. Cook W4JOH Taken from and re-edited from a project in 73 Amateur Radio Today, June, 1997 The original Cobra antenna designed by W4JOH is built using standard insulated wire of - 2 - Congratulations! You are now the proud owner of a Comtek 20 Meter Vertical Antenna. A lot goes into designing antennas but with a little bit of guidance and explanation, antenna users (network designers, systems integrators, end users) can read through the antenna specifications and choose the right antenna style for their wireless network design. An expensive attic antenna can cost $200 or more. Quad Antenna Design Having successfully operated for many years with various types of three element beams, mainly for convenience, I decided to try and build a two element three band cubical quad. mast using U-Bolts, Saddles & Hardware as shown in Detail 28. This does require some nuts and bolts and scrap metal. Well, this is not exactly the best (or most friendly) place to ask about "CB" anything. Adding a coil in series with the antenna at the base is one such method of matching. I started out with a 5/32″ drill as a pilot hole, then finished off with a 5/8″ speedbor spade bit . Radio Shack # 21-961 3/8"-24/SO239 Mount (Mobile CB Antenna) Antennas 101 Part 1 Dipoles, Doublets and Verticals Easier to hide in antenna restricted areas (can be disguised as flagpole or be a single wire in a tree) If you want to build your own antenna we can give you the dimensions you need. Unlike the compact internal antenna on a USB modem or cell phone, a Yagi's driven element is large enough to be fully sensitive to the frequencies of interest. Easy-to-build HDTV antennas. 3 Attach the bottom 10 ft. What I did was take a hacksaw and cut the top of each one about half an inch,cutting down on one side . 2 Meter Jaden. Improve the gain and front to back of your existing antenna is possible as well. It is commonly known as: "The Screwdriver Antenna" The antenna uses a wide-band unbalanced to unbalanced matching transformer Many RASON members truly enjoyed last month's collinear antenna. homemade Magnetic Loop antenna capacitive hat for Sigma Mantova 5 antenna (done, missing photos and article) homemade 1/4 wave mobile antenna with magnetic base and capacitive hat (done, missing photos and article) Build a DIY 2 Meter Vertical Antenna Next, I took the 3/4″ THD Dome Cap and drilled a 5/8″ hole through it. One of the great things about digital television is also one of the not-so-great things. The 6M7JHV was originally designed as a lightweight EME antenna, but it is a solid performer on terrestrial propagation also. (testing a 7el V-yagi @ 19SD348) 26SW037 has found another application…for when there is no propagation ! A portable 2-element VHF yagi May, 1997 Here's a simple Saturday project: build a portable VHF yagi antenna for 2 meters. 10/11 Meter Maximum Beam. ) to match the unbalanced coax feed to the balanced antenna. I've been researching how to build an antenna mast out of readily available materials. To form the rigid coax section, you’ll need to insulate the The L2 is a Two element base station antenna. Are further improvements possible? By replacing the phasing stub with a simple coil, the answer is yes. When you get the signal, it's crystal clear. Written By: Scott Wolfington The following article is based on a HamUniverse. Made From a TV Satellite Dish . 5 MHz ground plane antenna to improve NOAA Weather Radio reception. We have done this here in the states for 2 meters. A matching device of some sort must be added between the antenna and the feedline if you wish to feed it with coax. So much has been written on homemade ham radio antennas that it would be a shame not to point you to some of the best sources of articles on the subject. Use 11-inch 3/8 tube connector (D-1) for Vertical Gamma Match. K40 K40BCMAX 20,000 Watts 26 MHz to 30 MHz Helical Coil CB/10-Meter Antenna. Any plans or ? available? A properly dimensioned and constructed 4-bay bowtie does pretty well on VHF-High as well as UHF. 87" in diameter. A Can This is the fun part. I used 1″ thin-wall PVC pipe, aluminum tape, and RG-8X coax. There are two ways to do this: Purchase the chassis, board, board-mount components, frequency meter, power supply and jacks individually or purchase all necessary components as part of a kit. The antenna acts like a slim jim on 2m and a jpole on 70cm. Kronberg A good way to adjust a Yagi antenna , is by facing the antenna straight up , so the reflector is parallel to the ground or in this case at an angle. 5/8 Wave Length Antenna Design: 5/8 vertical antenna design The 5/8 wave antenna consists of a vertical radiator, a loading coil and colinear plane at the base of the antenna. Needless to say, I've ran into a little I have tried every antenna possible from dollar store 10 buck antennas to $50 Phillips HDTV indoor/outdoor antenna and the bare wire works better than them all (even when I put the $50 antenna on my roof). Uniden Bearcat 880 40-Channel CB Radio With 7-Color Display Backlighting, Browning BR-78 Flat Coil CB Antenna and Browning BR-MM-18 Mirror-Mount Kit With CB Antenna Coaxial Cable Product - Cobra HG A1000 HG A1000 18. 75" (. To talk on the CB channels Antenna Here is a Dipole You've probably heard this phrase in many QSOs. So now they watch dozens of High definition channels for free, thanks to a homemade antenna. Then the education specialist shared his newfound The Yagi-Uda antenna--often just called a "Yagi"--is a popular antenna due to its gain, directionality, and relatively lightweight design (see the figure to the right). This month I decided to build a 2 meter 5/4 wave antenna. These are just about as easy as the Dipole to create. PLEASE NOTE: FIXED RATE SHIPPING COST FOR MAINLAND US ONLY. Using scrap wire with stock lumber, build a slick homemade antenna and stay tuned. Welcome! Welcome of my homemade loop antenna or loop aerial pages. I made a good antenna with a Nalley's "Big Chunk" Beef Stew can that was 3. Click on any of the following links to see the Firestik document regarding the subject matter. Parts Needed. 95 This base antenna can be set up inside a home, on a job site or anywhere that requires a temporary base station Construction Plans for the Arrow Model J146/440. Summer contests are a great reason to get away from it all and enjoy the pleasures of • At least 20 feet of 50 ohm CB Antenna coax (WITH PL259). For an antenna, an old (or new) CB antenna, a homemade ground plane or a 1/2 wave dipole will do okay. The driven element is a dipole antenna that’s connected to the radio and receives the signal, just like a whip antenna. The theory works for ANY frequency you choose, from below 160 meters to way above 440 MHz. We invite you to JOIN today so that you can post and interact with our members. Firestik Indoor CB Base Antenna $64. It will not compete with a good high-gain directional antenna, but it sure beats rabbit ears. antenna is tuned to 127 MHz (roughly the middle of the aircraft band) the maximum broadband performance it can give is around 5 MHz whereas larger diameter antennas can give broadband performance over 10 MHz range. Mike and Erin Shelle are a young couple who loved watching TV, but hated their big cable bill. dx4. I need to get my 80M dipole up about 40 feet or more. It needs no tuner on 40m, 20m and 10m. 9 dBi gain and you put 100 watts into the antenna, it will behave like 1548 Watts in the forward direction. Concealed J-Pole David Stansbury KB3KAI. Else known as Small Transmitting Loop or STL, this isn't a traditional "electric" antenna, because the "near field" is almost "magnetic". First of all, you will need a coaxial cable of length 100 inches. Antenna theory and antenna terminology can seem complicated to the uninitiated. Building and experimenting with antennas can be an interesting part of the radio hobby. The normal quarter wave ground plane antenna consists of an insulated vertical radiator and surrounded by four horizontal radials To find the lengths of the The original antenna was designed as a moderately short antenna for the 10 meter band. To construct the antenna, first select a suitable length of grey 25mm conduit (as a minimum 1m but if you make it longer, you will have more room below the coil to attach to your antenna support). Measure 103. by Brian Carling This device can be built in a box or "open-frame", even sitting on your desk in a jumble will work! It is an "L Network. Different types of omnidirectional and beams are covered and explains which design most common commercial CB antennas use. You need three different diameter sections as they will go inside one another ,then some hose clamps to tighten that up. The tap for the antenna cable to the CB radio is made at about 2 turns from the cold (ground) side. Although this design has been around for a long time, it is only gaining popularity now due to the recent improvement in high power antenna tuners. This will make the antenna “right handed” polarized, since this is a more common configuration. As it is a universal antenna, it is one of the best CB antennas available as it fits on most vehicles. a greater effect to the antenna tuning and imbalance, especially if the feedline length approaches a quarter wavelength (or odd multiples) on the band of operation. Here you see the actual antenna mount disassembled and removed from the mirror/luggage rack bracket. Many hams’ first choice of antenna is a half-wave dipole. homemade cb antenna plans