Bazooka antenna theory This antenna was originally designed for radar use but was popularized by W8TV for amateur use. . S. Its bandwidth claims have sometimes been exaggerated. The third reason is a desire to teach basic antenna theory to the average ham. A balun is a 3-port network that converts a signal on an unbalanced transmission line to properly deliver or receive power from a balanced transmission line, which is often needed for coaxial cables and dipole antennas. "Finding the Holy Grail of Antenna's lives on because of youand us !" Double Spooky Bazooka tm Antenna - Spooky Good ! HAM rx-tx - CB rx-tx - SHORTWAVE rx an Nov 30, 2023 · If you want a low noise, wide bandwidth HF antenna, please consider this "Double Bazooka" design from Rob Wagner (VK3BVW). Dec 24, 2024 · Antenna Bazzoka Links → 34 10m Bazooka, WD9N This antenna up on my 21 foot telephone pole to test it and it has 1. So the stub is a parallel open circuit to the differential mode: it has no effect. 28 feet) and is made from RG-58 coaxial cable and 300 ohm twin lead. It is mostly made of RG58U coax, #16 automotive wire, rope suspension, and any plastic that can be cut into antenna tuning dipole Double Bazooka Antenna for 40 meters Posted on February 7, 2021 Posted in Antenna Theory, HamRadio, HF Antennas increasing interest in using the coaxial dipole (sometimes called the Double-Bazooka an-tenna) for its questionable in-creased bandwidth is disturbing, espe-cially in view of the results of an analysis and some experiments I performed and published several years ago. The main difference is in the tails. THE DOUBLE BAZOOKA ANTENNA Notes on Assembly of the Double Bazooka About 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. Government. One antenna uses all coax the other uses coax and twin leadRead More Oct 1, 2019 · This article explains the operation of a balun that transforms an unbalanced antenna structure into a balanced one. The trick is, one way or another, to make the common-mode currents on the coax a high impedance. The only caveat is that an antenna tuner must be used. Balanced and Unbalanced Half-Wave Dipole Antenna Consider the Antenna systems, antennas, simple antenna formulas, basic antenna theory, feed-lines, matching units, how antennas work, polarization of electromagnetic waves, frequency, the ionosphere and modes of propagation, Ground-Wave Propagation, Direct Wave or Line of Sight Propagation, Propagation by Refraction, THE DOUBLE BAZOOKA ANTENNA Notes on Assembly of the Double Bazooka About 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. The larger the wire, the wider the bandwidth. To the common-mode, the stub and the parallel section of feedline make a quarter-wave transmission line. It was written primarily for the newcomer and the non-technical old-timer. The operation of the balun is explained using the transmission line theory. Aug 24, 2019 · The Bazooka antenna, like other designs such as the G5RV antenna use the characteristic impedance of the feeder as part of the design. We would like to show you a description here but the site won’t allow us. This is a wider band balun than that of the bazooka or folded balun. Rod does a good job of discussing the theory, construction, testing, and use of this HF antenna. A May 22, 2019 · 40 meter double bazooka build video. My version uses an extended unshielded portion of the center conductor for added strength, and easier SWR tuning. Jun 7, 2014 · Lemma: this antenna is a dipole with one leg of it acting as a balun. For example, the 2:1 SWR curve for the cage antenna on 80 meters is only 287 kHz, according to the Antenna Book. The original uses an added piece of twinlead or solid copper wire. ) balun discussed above and in reference 1. A Hawaii-based Amateur Radio Antenna Blog focusing on the theory, design, and use of homemade antennas. Every radio amateur should build at least one antenna to prove to themselves they can improvise in an emergency. 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. Copy the image to your own hard disk and you are all Jan 29, 2024 · Antenna Bazzoka Links → 34 Double bazooka coaxial dipole broad-band, W5BGP The inside sections, do not radiate, but act as quarter-wave shorted stubs which presents high resistive impedance to the feed point at resonance and tends to cancel reactance as frequence off resonant frequencies Double Bazooka Dipole consist of a half wavelength piece of coax RG58 with the shield split at the center Because of the overwhelming interest I had in my homemade bazooka antenna I made this How to video! I am by no means an expert in antenna design or theory. Dec 31, 2023 · ) Dan’s Double Bazooka This is a cost saving center connector for your double bazooka antenna project. Mar 28, 2018 · The antenna bazooka is a powerful, high-quality mono-band dipole that is easy to do yourself. May 5, 2025 · Antenna Bazzoka Links → 34 Meter Sleeve Dipole Antenna This is an off-center-fed sleeve dipole, made of 1/2 CPVC and aluminum foil tape Bazooka Antenna Calculator Double bazooka calculator The calculation of the popular double bazooka antenna is easier than you can imagine Doubla bazooka coaxil dipole antenna A typical, dipole antenna has bandwidth of about 50 to 100 KHz May 4, 2022 · If you want an antenna to regularly work the CW, digital, and phone portions of 80 meters, you might feel limited by the double bazooka. The design is easy to replicate and uses common materials. com Subject: “ The Triple Bazooka “ 「トリプル バズーカ」 I designed and experimented the double bazooka dipole with one more bazooka match built into the feed line, the Triple Bazooka. Today, the Double Bazooka antenna is still widely used for a variety of applications, including FM broadcasting, TV broadcasting, and ham radio. The result and performance of the triple bazooka are better than the double bazooka, so I would like to share these interesting results… One of the easiest and quickest antennas to build is the Vertical Bazooka, which is made entirely from coaxial cable. 8 The Double Bazooka antenna’s 2:1 bandwidth is only 14% greater than that of a simple dipole, according to the Antenna Book, which calls the antenna “controversial,”9 probably because it has been questioned whether the antenna Mar 28, 2018 · The antenna bazooka is a powerful, high-quality mono-band dipole that is easy to do yourself. The Double Bazooka Dipole is a very efficient single band antenna which is very quiet, and does not require the use of a balun. I used no more than 100 watts on that antenna, used it 6m to 80m, and had contacts from Asia, Australia, Europe, Africa, and even Antarctica. On this page I give details of how to build two different versions of the Double Bazooka Antenna. Reviews For: RadioWavz Double Bazooka Category: Antennas: HF: Verticals; Wire; Loop eMail Subscription Registered users are allowed to subscribe to specific review topics and receive eMail notifications when new reviews are posted. I found that lumped-element matching networks or the often-referenced Bazooka dipole and other forms of thicker conductors were neither practical nor effective for Moved PermanentlyThe document has moved here. One of the easiest and quickest antennas to build is the Vertical Bazooka, which is made entirely from coaxial cable. It is a project to build only one part of a double bazooka antenna system. In this video, Bob (VK3BVW) reviews the popular double bazooka antenna made by IAC Antennas (http://www. It is not a full set of directions to build a complete double bazooka. The plan for a Vertical Bazooka is in the drawing above. Hm A Choke Balun, or balance-to-unbalance transformer, is a circuit element used to connect a balanced line to an unbalanced line or antenna. This is the basic schemaRead More A DOUBLE BAZOOKA antenna is an extremely broad banded Half Wave Antenna which can operate efficiently across an entire Ham band with little change to the SWR. A Doublet is always a fine choice when maximum frequency adaptability is in order, but the Double Bazooka is a very fine antenna and one which I will be using far into the future. This review examines double bazooka antennas designed for the 80 and 40 meter amateur radio bands. The parallel resonant (tank circuit) network stores energy and will oscillate at it's DRIVEN frequency when driven near resonance, so it stores the energy that would otherwise be reflected as long as it Aug 19, 2020 · I'm intending to make a sleeve balun (aka bazooka) for 2m, but rather than keep the lossy coax jacket as a dielectric (I have some RG58), was considering to remove it and replace it with heat shrink The balun is electrically equivalent to the quarter-wave bazooka The balun-fed test antenna mounted on the antenna support. The antenna, with its inner section of coax and its end sections of open-wire transmission line (ladder line), was popularized Jan 29, 2024 · Antenna Bazzoka Links → 34 Double bazooka coaxial dipole broad-band, W5BGP The inside sections, do not radiate, but act as quarter-wave shorted stubs which presents high resistive impedance to the feed point at resonance and tends to cancel reactance as frequence off resonant frequencies Double Bazooka Dipole consist of a half wavelength piece of coax RG58 with the shield split at the center The Double Bazooka Antenna is simple to build broadband dipole antenna Someone consider the double bazooka antenna to offer a 3dB improvement over a common dipole antenna. That's an entire subject for another discussion but its why some designs use segments of 300 Ohm balanced feeders, some use 50 Ohm coax and there are a multitude of other feeder configurations also possible. Simple and intuitive models of balanced and unbalanced structures are presented and the formation of a sleeve (bazooka) balun is detailed. I highly recommend you try one! Antenna systems, antennas, simple antenna formulas, basic antenna theory, feed-lines, matching units, how antennas work, polarization of electromagnetic waves, frequency, the ionosphere and modes of propagation, Ground-Wave Propagation, Direct Wave or Line of Sight Propagation, Propagation by Refraction, Here's how it works: The antenna is a parallel-resonant network (the bazooka) in parallel with a series-resonant network (the dipole). I. At the ends of the coaxial cable, the sheath and the core are welded together and continue with a monopolar cable of copper. com - Bazooka Baluns. I was looking for a way to avoid retuning my 80-meter inverted V on a 140-foot guyed tower, since the ends are out of reach even if they are folded straight down. This involves an outer sleeve resembling a bazooka that chokes off the current on the outer section of the coax. Dec 4, 2024 · The antenna called double bazooka was designed to be used in radar by the staff of M. One of the easiest and quickest antennas to build is the Vertical Bazooka, which is made entirely from RG-8U coaxial cable. com). Jul 11, 2024 · I had made a 80m Double Bazooka out of used, discarded coax from work one year when I was living in Louisiana. I feel like the GAP is not so well performing on that band and I’m goint to setup for the CW portion of the 40 meters. Dec 31, 2016 · The Double Bazooka antenna is a worthwhile project whether you make one yourself or buy one from an Amateur Radio outlet. With the feedline attached directly to the two open ends this acts as a half wave dipole along Double Bazooka Coaxial Dipole Antenna Info There is a lot of controversy surrounding the Double Bazooka Coaxial Dipole. Do not break the center conductor. Cross-connected Double Bazooka. The Double Bazooka is a balanced antenna, and benefits from a balun to transition to unbalanced feed line in the same way that an ordinary dipole benefits from a balun. Apr 18, 2022 · The Double Bazooka Antenna is a broad-banded half-wave antenna, offering wider bandwidth and lower SWR than a dipole, popular among amateur radio operators. This is the basic schemaRead More Sep 20, 2009 · 2009/09/20 ve3cgc@hotmail. The operation of a bazooka balun is described, also known as a sleeve balun. In that case you could have to conductive things nearby and parallel, instead of concentric. It is also known as a sleeve balun. Unlike the "classic" dipole antenna, the double bazooka is grounded. iacantennas. But the following design is my slightly modified version from the original. Find links and resources for Bazooka antennas. The Double Bazooka antenna quickly gained popularity among radio enthusiasts and broadcasters, and it became a standard design in the industry. Bazooka balun is a sleeve around the coaxial cable, short circuited to the outer surface of the shield and resembles a bazooka. Hopefully there's a much lower impedance path somewhere (like, the dipole you're May 10, 2023 · What is a Bazooka Balun? Balun stands for balanced line to unbalanced line, typically connected between a balanced antenna and an unbalanced feeder coaxial cable. 5:1 SWR The Vertical Bazooka Antenna The antenna itself is an off-center fed vertical dipole made by flipping an electrical quarter wavelength of braid back over the outside of the coax The Little Stick Antenna for 2 Meters, VE3VDC Very compact, only a meter tall on 2 meters no 4 days ago · Build a Double Bazooka HF antenna Build a double bazooka coaxial dipole, broad-band dipole antenna Choosing wire for an antenna One of the most asked questions when it comes to antennas is what kind of wire should I use DX Dual Dipole Two dipoles fed from the same coaxial line by n6bz for 20 and 15 meters Folded Dipole Jul 11, 2020 · I've never seen a balun design like this and and I'm not entirely certain it works. The transmission line doesn't need to be coaxial, it could be a balanced transmission line too. Therefore, to achieve that goal, you should read this book all the way through. The 80-meter amateur band covers a very large fractional bandwidth. 300 Ohm Twin Lead with the ends shorted is an option for even greater bandwidth. 1/4 Vertical bazooka antenna for the 40m I needed a omnidirectional antenna for the 40m here is the schema of the antenna Coaxial Antennas I constructed a simple horizontal dipole with each half comprising RG58 coaxial cable about 35 inches 900mm long Another reason is to dispel the many antenna myths that circulate in the amateur community. Amateur Radio, Antenna Theory, Homebrew Antennas, Hidden and Stealth Antennas, CC&R's, and Antenna restriction. Do not break the 4 days ago · Explore a variety of Bazooka antenna projects for amateur radio operators. Build your own dipole or vertical Bazooka antenna with detailed plans and calculators. The Double Bazooka Antenna is simple to build broadband dipole antenna Someone consider the double bazooka antenna to offer a 3dB improvement over a common dipole antenna. The 40 meter version of the antenna is 51 meters long (167. It gradually changes a unbalanced transmission line to that of a balanced line. This could be done with a bazooka balun; however, this balun is farely narrow bandwidth. The operation of a tapered balun is described. Specifically, a bazooka balun (AKA sleeve balun). This antenna consist of a half wavelength piece of coax (RG58) with the shield split at the center and the feedline attached to the open ends. But if it does, here's how I think it could work: As you say, a shorted quarter-wave stub appears like an open circuit. Planning to setup a double bazooka antenna for 7 MHz during next months to verify performance of the Gap Titan DX on that band. Reviews For: IAC Standard Double Bazooka Category: Antennas: HF: Verticals; Wire; Loop eMail Subscription Registered users are allowed to subscribe to specific review topics and receive eMail notifications when new reviews are posted. The Double Bazooka Dipole is a very efficient antenna which is very quite, is very broad banded, and does not require the use of a balun. The Double Bazooka is a very popular antenna. Listed under the Antennas/Bazooka category that is about Amateur radio antenna projects with detailed plans and calculators. For the antenna of Figure 1 to work properly, the current on the outside of the coaxial cable (black region) must be choked. Whenever you want to feed a dipole with coax, you have to do something about common-mode currents. May 5, 2025 · Antenna Bazzoka Links → 34 Meter Sleeve Dipole Antenna This is an off-center-fed sleeve dipole, made of 1/2 CPVC and aluminum foil tape Bazooka Antenna Calculator Double bazooka calculator The calculation of the popular double bazooka antenna is easier than you can imagine Doubla bazooka coaxil dipole antenna A typical, dipole antenna has bandwidth of about 50 to 100 KHz The outer conductor of the coaxial cable (black) is attached to the green arm of the spiral antenna. It is mostly made of RG58U coax, #16 automotive wire, rope suspension, and any plastic that can be cut into Jul 22, 2020 · See more at antenna-theory. Apr 22, 2015 · Rob's video explains the theory behind the bazooka antenna and how it can be erected safely. T. Sep 9, 2018 · Rob (VK3BVW) does an excellent job of explaining the theory, design, construction, and use of the double bazooka antenna. The DOUBLE BAZOOKA antenna design was first conceived as a radar antenna in the early 1940's for use by the U. (This mounting technique is not recommended for regions subjected to high winds or heavy icing. It was modified for amateur radio use in the 1950's. May 6, 2005 · Can someone show me a diagram as to which way a double bazooka dipole radiates?, LOOKING FROM THE TOP OF THE DIPOLE mounted horizontally (and not a inverted V position), does the antenna radiate parallel to the top portion of the dipole (Facing north/south), or perpendicular?? Dipole here is a review of the 40 and 80 meter band double bazooka antennas as used on the hf shortwave bands . wmv. The End Wire Size can range from 16 AWG to 12 AWG. Double Bazooka NVIS Antenna Calculator The measurements below are for building a Double Bazooka Near Vertical Incident Skywave (NVIS) Antenna. Home-Brew DOUBLE BAZOOKA rarely survive harsh elements and Antenna Definitions, or commonly used terms related to antennas, are individually defined for quick reference. That double bazooka blew doors on any "bought" antenna I have ever owned. hsaq mpmbuw zcstq lwobg zdcxm xfug xmuhjt gfxg fpacyev mskwn egtb hidxxv zwtzkk whim vkd