Built a home brew J-Pole antenna. In an emergency situation, it is often necessary to squeeze every bit of performance possible out of a 2 meter HT. Homebrew Ham Projects. I want a ham radio and to learn all about them. by Mike Walkington, VK1KCK. The antenna is constructed using a 4-way electrical conduit junction box and 3/4″ PVC electrical conduit as shown above. My workshop under the garage needed to have a separate antenna, preferably hung from a nearby tree. I'm such a fan of J-poles, in fact, that I've built at least 3 of them for 20 meters, two "standard" J-poles and one "modified" one (longer matching section, shorter radiator, so you can directly feed. It's a perfect first project for any 'Ham' who want to check his signal strength. 6M G5RV Jr. The 2 Meter antenna - A Cycloid Dipole: For the 2 meter beacon we started using a 2 meter J-pole - but in a service where most people listening were likely to be using horizontally polarized antennas, this was not considered to be ideal. Super J-pole 9 feet tall N2UHC. Discover ideas about Ham Radio Antenna. It’s constructed of a 48″x1/2″x1-1/2″ strip of Poplar, six silicon bronze welding rods, and a piece of coax robbed from an old, broken mobile antenna mount. com forums, I finally built a Yagi that works! … Continue reading "Homebrew GMRS 3 Element Yagi". The problem with an end fed half wave antenna is that the antenna presents a high impedance, creating a. Full-Wave 6 meter (6M) Amateur Ham Radio Dipole Antenna. During what turned out to be an extended tower-raising project (Going from 55 feet to 90 feet), I had my beam down and I needed an antenna that could provide the necessary gain and angle of radiation to talk to my friend Skip down at the South Pole. Drill out the rivet holding the By Ron Hege, K3PF A Five-Element, 2-Meter Yagi for $20. There are many simple designs provided by a whole world of hams to choose from. I get superb aircraft reception but a very weak signal from my local airport 20 miles away. Super J-Pole Antenna This antenna was developed by the Independent Repeater Association in Des Moines, Iowa, for use on its many repeaters, nodes, and BBS. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from MFJ Enterprises, Inc. I wound this on to the fishing pole which. 10-80 Meter Alpha Loop, 100W 10-40M, 20W 40-80 magnetic. This is a great omnidirectional gain antenna! 20 meter wire J-pole: This end-fed half wave radiator is simple to make and even simpler to put up with a single rope. As an SWL, I was very much interested in antennas and its construction. This video shows how I made my 6 meter portable dipole using collapsible antennas and PVC. There are a bunch of reasons why you're going to want to build one of these beauties:. This is about 1 full wavelength of wire. Coat Hanger / Copper Wire 2 Meter Yagi Antenna 2 Meter Yagi Antenna w/ Gamma Match Dipole and Inverted V Antenna Basics 10/15/20m Trap Vertical Antenna Dave Tadlock helps you build a home brew trapped vertical Inverted V Calculator thanks to k7mem Martin E. This is because I wanted to squeeze the antenna into available space. Thanks to Eric, PE1FES, for the mechanical work. A 2m colinear Super J-pole made from a 102. (And also to have horizontal polarization on 6 meters. There are a bunch of reasons why you're going to want to build one of these beauties:. How to make a 2 meter roll up j-pole antenna using 300 ohm twin lead cable. It does not need a ground plane, radials or a complicated matching system. How to Make a 2 meter J-Pole Antenna with the Budd Homebrew Ham Radio Antenna Mount for camping. How close can I mount two VHF/UHF antennas | KB9VBR J-Pole Read more Portable 2 Meter. Both antennas were designed for easy construction and quick assembly and disassembly. Komponen lain yang berfungsi sebagai penyambung antara element dengan phasing inverted menggunakan Elbow yang sesuai dengan ukuran Pipa. Thanks to Eric, PE1FES, for the mechanical work. I am not sure I am getting the sensitivity. 5 wl antenna. 6 out of 5 stars 3. The antenna costs almost nothing to construct and should handle up to 50 Watts of power. The Dual-Band Open-Stub J-Pole Antenna Built out of heavy duty 3/16" angle aluminum, UHF SO-239 connector with 3/8 aluminum elements and all stainless steel hardware. The stand is a piece of steel pipe in a wooden stand that I rigged up. 5/8 wave stacked J-pole. 6 Meter J-Pole Antenna. I folded over the wire at the tip to shorten it up. Since the bandwidth of the antenna is wide the adjustment parameters are relatively broad and fine adjustment is not usually necessary. Omnidirectional. The key word here is Figure 1 — The original 2 meter ribbon J-pole antenna. I've constructed a 144/440 Dual band Open Stub J-Pole Antenna. Tilted Folded Dipole Antenna 16 25. This makes a great emergency antenna. 22 Different Wire Antennas for the 160 Meter Band 80 Meter Half Square. This makes the 2 Meter Slim Jim antenna a great solution for repeater sites, data and packet stations, APRS, and even every day. This is a good rainy day antenna project for those of you who would like to home brew a nifty low profile 2-meter antenna. The SIMPLE 2m/440 Copper pipe "J" Can you use a pipe cutter or a hack saw, can you solder – then here is how to build a SIMPLE ”J” antenna that will more than double your 2 meter (and even 440) performance! by Dale “Kuby” Kubichek, N6JSX. Antenna Round Up — antennas for 6, 10 & 2 meters Antenna Theory 101 — antenna tutorial from KD4SAI Antennas from K5DKZ Antennex — online antenna magazine Attic Antenna — trap dipole design for your attic. Homebrew 80m 5W SSB/CW transceiver with 2 x AD831 active mixers and 6 pole quartz ladder filter. This is the hairpin match I made for a 6 meter yagi. A list of parts needed is at 13:28 of video. It does not hurt you to try or buy 38" J-Pole Antenna Mount. With twice the gain of a standard J-Pole antenna, the 2 meter Slim Jim antenna is a J-Pole on steroids! The Slim is an end-fed folded dipole antenna that has a gain of 6 dbi and a nice low RF take off angle. ost commercial 2-meter repeater antennas with gain fall into two categories:. 4-1 at 144 &148 MHz. 50 foot ground radials Five Eights wave Vertical is: 12. Indoor/Outdoor 2 meter/70cm Slim Jim/ J-pole Roll Up antenna - Duration: 4:56. double bazooka antenna beam - Google Search. Must be some kind of garage project - someone with too much time on their hands. The J-Pole antenna is a 1/2 wave antenna with a 1/4 wave matching stub. However, if you use a separate antenna for the HF bands, and another for 6 meters as I do, you need an antenna switch. Multiband 40 - 10 Meter Vertical Using PVC by HI3/KL7JR. The excellent commercial version of this is available by it's inventor, Traffie Technology for those who don't want to go to the hassles of building. It also has a little bit of gain over the J-Pole although not much. Resources listed under J Pole category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. 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. I would have opted for a 6/2 meter antenna of some kind except the tubung is grounded at the base. The most popular antenna for homebrewing is the 2 meter J-pole. Super J-Pole Antenna Project Ham Radio Crash Course HOMEBREW Dual Band 2m / 70cm vertical dipole BUILD #2 Part 1 J Pole Antenna for 2 Meters - Duration: 5:58. I needed something with a wider bandwidth and dual-band. Second, the feed point seems to be at a different point. However, it took about 80 inches of wire to make the 22 turn coil. 25 meters) Base Ham Amateur Radio Antenna Copper J-Pole FREE SHIPPING. Let say antenna/ load voltage is Vout = Vr + Vx, where Vr is resistive voltage and Vx is imaginary voltage. SLIM JIM ALUMINIUM. double bazooka antenna beam - Google Search. The SWR showed a nice resonance point but it was below ten meters more like eleven meters. A 6 Meter Moxon Antenna Discover 6 meters for the first time or enhance your existing operation with a rugged but portable version of this novel 2 element antenna. High Performance 40 Meters Vertical. 50 foot ground radials Five Eights wave Vertical is: 12. J Pole Lets start with this: The J-pole is actually might be a bit deceiving. of a antenna analyzer or 70cm swr bridge. I used the Balun included with the antenna. Homebrew 2 meter Amateur Radio Antenna from Ordinary TV Rabbit Ears antenna Short on a good and reliable antenna for your amateur radio operation ? Here’s how to make a simple 2 meter amateur radio antenna from ordinary tv antenna (Rabbit Ears Antenna). NOTE: This antenna is a non-stock item, it is built and assembled when ordered. home brew J-Pole working with my IC-2100H and THEN I should be able to hit the VE1BHS repeater with a decent signal. Since I had a Metal Fabrication background, I thought this would be an easy build. This is the perfect antenna for a 6 meter repeater project or high performance base station installations. 6 Meter Homemade J-Pole Antenna By KK4BCV On the air, looking for signals! The 6 meter repeater we use in my neck of the woods has a receive frequency of 53. A 6 meter vertical antenna must have at least 18 feet of active antenna to have 3 dB gain over a 1/2-wave dipole, and even then it might not be at the horizon, or may have coil losses, etc. For more information visit http://www. Welcome to the G6OHM Website - Antenna Designs - Amateur Radio,Projects,Antenna Designs, Double Quad Beam,2m & 70cm SSB, Ham Satellites,Card Making, Recipes,BNOS,Flowerpot Antenna, Angela's Page,EXPMR Radio,Raised Bed Gardeningsion,Fusion Radio. We chose the G7 for the repeater antenna. 2 Meter WB8ERJ. I had a dipole up for 4m previously (see here), which worked fine, but was quite ugly on a 1 metre boom arm. I have some aluminum stock lying around. VHF ¼ wave mobile VHF rubber duck Standard VHF J-Pole Dual Band J-Pole-24. Portable Amateur Radio Satellite Antenna. The size of the antenna makes a Half wave length on 80 meters, and with the traps a half wave on 40m with a SWR (standing wave ratio) of 1:1-1. com in a single category. In free space the center-fed half-wave antenna has an input impedance that is a close match to 50 ohm coax and to most radios that have a 50 ohm output impedance. We assume that antenna input impedance is Z = R + jX. Williams, GW0GHF 5/8 Six Meter Vertical-- by G3JVL 50 Mhz Antennas By ON4ANT Six Meter Antennas A Bunch-- From The UKSMG News Six Meter Antennas A Bunch-- From 6MT. 5/8 wave stacked J-pole. The zeppelin antenna (or simply “zepp”) is a popular end-fed wire antenna for shortwave bands and has lots of simularities with the J-pole antenna. After taking it down, I found a number of. The 6 meter Moxon is built from 5/ 8 inch OD and 1/ 2 inch OD aluminum tubing with 3/ 8 inch OD solid aluminum for the corners. Mount the antenna to a pole making sure to clamp the antenna to the mast at a point below the decoupling sleeve area. In the first set of plans, the feed point is approximately 20% up from the shorted end of the matching stub. If you watch closely, you can divide the J-pole in two pieces. Homebrew Hex Wire Beam Antenna I put together a homebrew wire beam based on the "hex" style. Steve Yates - AA5TB. Home • Products • Technical Info • Sample Photos. This antenna was vertically polarized and exhibited a gain (in free space) that is the same as a dipole (theoretically, 2. Please allow an extra 2-3 days for. I already have an 80-meter dipole and I really enjoy CW on. The size of the antenna makes a Half wave length on 80 meters, and with the traps a half wave on 40m with a SWR (standing wave ratio) of 1:1-1. The unique design characteristics of this 6-80 Meter HF JPole antenna enables. DBJ-UHF was developed from a grant from AC Daughty to develop a low cost medium gain MESH antenna for UHF. I love that length. N2NJH's Antenna Roundup-- Build a J-Pole for any frequency - Includes an Excel Spreadsheet!, Pocket J-Pole, Half Wave J-Pole, Stacked 5/8, Field 2 meter Colinear, 2 meter Colinear in PVC, 2 meter Halo, Eggbeater Loop Antenna. Figure 1 shows my 16-inch 6-meter. WB4BXW Dipole and Inverted V Antenna Calculator Dipole and Inverted V Antenna Calculator J-POLE ANTENNAE: Packet Radio Operator's Complete Guide to Building Amateur Radio J Pole Antennae J-Pole Antenna Design Calculator Building A 2-meter J-Pole Antenna. Today, I finally built a ½ λ dipole for 4m. Since the bandwidth of the antenna is wide the adjustment parameters are relatively broad and fine adjustment is not usually necessary. Simple 50MHz-J-Pole-Antenna, DK7ZB: Small Transmitting Loop Antennas, AA5TB: SP3INJ Drutowa anatena INJ-Mag-Loop na pasmo 3,5 MHz: Simple 13cm antenna, M0DTS: Single-stub matching of transmission lines to loads: Slim-Jim 2m VHF Band Antenna: Small Antennas W0KPH: Small Magnetic Loop Antenna: Short 80 meter vertical antenna: THE MARK II. Here we have collected some links to building instructions for 11m antennas on the Internet. This antenna is perfect for HAMS that need a quick reliable solution for local 2 meter communication. Anyone have plans for a 220 J-pole? 3. Cheap Yagi Antennas for VHF/UHF by Kent Britain, WA5VJB edited by John Maca, AB5SS [Editors notes: The antennas described in this article were built as the result of several discussions between Kent and a Cuban radio operator. 6 meter j-pole antenna trial sramsdellwdm. 2-1 from 440 - 450 MHz. Let's Build One! The NVIS antenna described is based on the proven information from the military AS-2259/GR antenna. We thought some of you may be interested in it. 9" 5/8ʎon 2 meters is 50" and impedance matching is provided by a low inductance coil The above combination provides a base-loaded vertical antenna that works on 6 meters. Hello Ernest, thank you for answering my questions I have a couple more, I have 3 motorola fm 6 meter radios not side band but fm, should I build the square halo antenna or a verticle polarized? Are the 6 meter repeaters in my state usually fm or side band, I really like the horizontal antenna for the least wind resistance the slimjim 6 meter. 7 Element VHF High Gainer N. They are picky about where they are placed, and what is near them. On the other hand, they are sort of complicated. Home Brew X-Band Wavemeter. This is a good rainy day antenna project for those of you who would like to home brew a nifty low profile 2-meter antenna. I needed something with a wider bandwidth and dual-band. double bazooka antenna beam - Google Search. The only drawback to this antenna is the cost of copper pipe used for the antenna sections. 5/8 wave stacked J-pole. Does your J-Pole antenna fit inside your pocket?Ours does! This 2m and 70cm. Kinsner, VE4WK J-POLE ANTENNA FOR 2m 3 of 3 1 2 3 4 5 6 7 8 E D C B A E D C B A 1 2 3 4 5 6 7 8 5 June 1992 J-POLE PARTS LIST PROCEDURE P2 M1. Another popular design is the Arrow Open Stub J-Pole antenna. Home • Products • Technical Info • Sample Photos. but I did check a 2 meter antenna with an MFJ. The extension has now made a final. The J-Pole antenna is an omnidirectional antenna that can be used for base, mobile and field day stations. a dual band J-pole? Adding a Second Band to the J-pole To incorporate UHF coverage into a VHF J-pole requires some explanation. 2-1 from 440 - 450 MHz. How close can I mount two VHF/UHF antennas | KB9VBR J-Pole Read more Portable 2 Meter. Portable Amateur Radio Satellite Antenna. Ok question, I am wanting to build a 2 meter j-pole and have looked at 100's of designs and have noticed that some have the short leg as the driven element and some have the long as the driven element. Multiband Tuned Doublet Antenna 14 21. Homebrew 80 meter flat-top dipole up 50 feet. The 6 meter Moxon is built from 5/ 8 inch OD and 1/ 2 inch OD aluminum tubing with 3/ 8 inch OD solid aluminum for the corners. The information is still useful to familiarize members with the antenna in preparation for the build. The trap is a coaxial cable trap, made from RG-213 cable. Ontdek (en bewaar!) je eigen pins op Pinterest. Second, the feed point seems to be at a different point. Additional notes on J-Pole construction: The above dimensions for the J-pole are in inches. To achieve a more steady uplink, I decided to build an antenna with a bit more gain, at least 6 dB extra compared to the HB9CV. However, if you use a separate antenna for the HF bands, and another for 6 meters as I do, you need an antenna switch. The design uses a matching system like a j-pole antenna. · 6 meter Amateur Radio Antenna - KB9VBR J-Pole Antennas - Great for FM communications, the 6 meter J-Pole covers the 50-54MHz six meter amateur radio band efficiently and with a low noise floor. Building a Carbon Fibre Dual Band Yagi Antenna for Amateur Read more. Homebrew Coaxial Dipole for VHF or. I get superb aircraft reception but a very weak signal from my local airport 20 miles away. 6 dB over the half-wave regular J-Pole. 73, Tjeerd (Gose) - PA3GNZ. Slim Jim (J Integrated Match J-Pole) The 2 meter Omni Samurai Antenna; Homebrew 2 meter Amateur Radio Antenna from Ordina A vertical aerial for 70 cm; A J-pole. Here are a couple of pictures I took this morning showing my current Home Brew base antenna. The 450 OHM Ladder Line Slim Jim Antenna. KB9VBR J-Pole Antennas Amateur Radio, Land Mobile, Scanner, Low Power FM, and Airband Antennas. The information is still useful to familiarize members with the antenna in preparation for the build. A good example is the 1/4-wave monopole ground-plane, which is very popular on low-band because of lightning protection. Multiband 40 - 10 Meter Vertical Using PVC by HI3/KL7JR. It operates as an end-fed half-wave antenna. I needed something with a wider bandwidth and dual-band. It seems as if our society is becoming more and more conscious of aesthetics in neighborhoods. Bazooka Antenna Design — from WE6W Beverage— a short beverage design by K3KY Broomstick Special: — compact, easy-to-build. Second was to be able to use some of the local 6 meter repeaters and third was to be able to use single side band when the band opens. The Buddipole™ - HFportable dipole antenna system, Welcome to the home of the Buddipole™, an hf/vhf portable dipole antenna system which is designed to be modular, versatile, and efficient. Full-Wave 6 meter (6M) Amateur Ham Radio Dipole Antenna. Building a home-brew spiderbeam antenna is not like building a home-brew dipole antenna - it's not a task which can be completed in an afternoon. This link is listed in our web site directory since Tuesday Jul 5 2016, and till today "Home Brew J-Pole Antenna Project" has been followed for a total of 607 times. As the late spring and summer months heat up, six meters comes alive. ) This is an excellent performing J-Pole type antenna, constructed from readily available materials. FlightAware. I set to work to scale the antenna from its original size up to a length that would work for at least part of the 6 meter band. bz/cb_radio_j-pole_antenna. Mount the antenna on a pole about 6 feet long and fasten to a step ladder or some support with some rope or electrical tape. Many think the wire length in the coil should be exactly 1/2 wave long. J-Pole antenna is an end-fed omnidirectional antenna that should be fed with 50-ohm impedance balanced line. 2m Projects - Omnidirectional Antennas Here is a 2 meter (146 Mhz) J-Pole antenna that is inexpensive, and easy to build. com 2 meter J Pole Antenna VHF UHF 16ft RG58 coax cable - PL259 & RF. Multiband Tuned Doublet Antenna 14 21. This Horse Fence antenna is the Best money I ever spent in Ham Radio gear in over 40 years as a Ham! If you want the very best antenna money can buy in this type of antenna, this is the one for you! I bust pileups every day even without an amplifier and hear signals the guys with the expensive beans wish they could hear!. The stand is a piece of steel pipe in a wooden stand that I rigged up. We will use this wavelength equation for all of our calculations. After working three years with a homemade DL6WU type 6-element-antenna, I was intended to build something new as the old antenna decided to fall apart. When fed with coax (whether it is an RG-58 or RG-8) cable, it should be connected with air-choked balun. com in a single category. While still using copper pipe, you. This antenna differs from the 2m J-pole in a couple of ways. 5 across both bands. The 450 OHM Ladder Line Slim Jim Antenna. I used my Yaesu VX-6R on 2 meters and 70 centimeters, a Wouxun KG-UV5D on 6 meters, and a TYT TH-UVF9 for my 1. There are many simple designs provided by a whole world of hams to choose from. (Step-by-step instructions with photos can be seen below, following the project description and safety disclaimer. All the 6 meter antennas as custom built when you order is placed; average build time is about 3-4 days. Since I like making things, a homebrew antenna was in order. J Pole Lets start with this: The J-pole is actually might be a bit deceiving. On the one hand, an antenna is just a hunk of metal. Low Profile Antennas. 2 Meters—An All-Copper J-P01e By Michael P. The 6 meter Moxon is built from 5/ 8 inch OD and 1/ 2 inch OD aluminum tubing with 3/ 8 inch OD solid aluminum for the corners. drez20001 78,090 views. a dual band J-pole? Adding a Second Band to the J-pole To incorporate UHF coverage into a VHF J-pole requires some explanation. To quote from the article, "It is best described as a telescoping 5/8-wavelength vertical whip antenna above a ground plane of four folding telescoping quarter-wave. (And also to have horizontal polarization on 6 meters. Make sure you don’t roll it up to tight. An Amateur Radio Project. M0MTJ VHF Antenna Matching unit. Second was to be able to use some of the local 6 meter repeaters and third was to be able to use single side band when the band opens. Also anyone considering building one should consider using silver-solder for strengh not the 50/50 or 95/5 plumbers use these days. Ham Radio Antenna Wifi Antenna Phased Array Communication Methods Radio Wave Morse Code Hams Circuits Radios Wifi Antenna. Originally, plans specified a single set of ¾ inch saddle clamps and the much smaller element-to-boom plate. Tame the predictable mast currents found in any j-pole antenna grounding conductive mast using a simple stub. DBJ-UHF was developed from a grant from AC Daughty to develop a low cost medium gain MESH antenna for UHF. Indoor/Outdoor 2 meter/70cm Slim Jim/ J-pole Roll Up antenna - Duration: 4:56. So with new license on the wall I used the calculator to build a 6 Meter J Pole from. 20m Indoor Antenna. A quarter wave ground plane is the simplest way to go and will perform well (as well as a J-Pole) with the least amount of hassle. wanted plans: j-pole 440. I use a J Pole for air band (122 MHz). Arrow Antenna GP-52 6 Meter Ground Plane Arrow Antennas $54. This video shows how I made my 6 meter portable dipole using collapsible antennas and PVC. VHF ¼ wave mobile VHF rubber duck Standard VHF J-Pole Dual Band J-Pole-24. The units is not the same, one on the right using Battery (9 V) and on the left just using the electronics component. In an emergency situation, it is often necessary to squeeze every bit of performance possible out of a 2 meter HT. This is because I wanted to squeeze the antenna into available space. The trap is a coaxial cable trap, made from RG-213 cable. · 6 meter Amateur Radio Antenna - KB9VBR J-Pole Antennas - Great for FM communications, the 6 meter J-Pole covers the 50-54MHz six meter amateur radio band efficiently and with a low noise floor. The Buddipole™ - HFportable dipole antenna system, Welcome to the home of the Buddipole™, an hf/vhf portable dipole antenna system which is designed to be modular, versatile, and efficient. Is it that simple? I have made a 2 meter J-pole and it was that easy using all 1/2" copper pipe. Arrow Antenna. I am happy with my BaoFeng UV-5R Pro but the local UHV VHF repeater and simplex reception is terrible, even for contacts less than 50 kilometers. 20 Meter Delta Loop Antenna. VHF 5/8wave vertical antennas RE-A144V58/1 By Guy, de ON6MU. Antenna Hombrew 2meter: J. I already have an 80-meter dipole and I really enjoy CW on. Originally, plans specified a single set of ¾ inch saddle clamps and the much smaller element-to-boom plate. This antenna is also known as the "copper cactus" (because it kind of looks like one of course!). I've taken what I learned from the GMRS … Continue reading "Homebrew 5 Element VHF Yagi". Need a general purpose antenna on “6 – the magic band” ? The J-Pole is an easy-to-build and inexpensive device that provides an omni-directional vertically polarised antenna without the need for a ground plane. I am providing this page because the dipole antenna is often overlooked nowadays as an effective means to getting on the air. Homebrew 80 meter flat-top dipole up 50 feet. Post subject: How is ERP measured? Posted: Jan Tue 21, 2020 1:05 am Member. Have a look if you are interested and print off any you think you might want for your 'Antenna file'. So with new license on the wall I used the calculator to build a 6 Meter J Pole from. It is an outstanding performer, especially when you get it up in the air. stub-j-pole-project-completed-many-times, Jeff had the same idea as we did. Multiband 40 - 10 Meter Vertical Using PVC by HI3/KL7JR. This Pin was discovered by Gary Magers. This is about 1 full wavelength of wire. This is a good rainy day antenna project for those of you who would like to home brew a nifty low profile 2-meter antenna. All the 6 meter antennas as custom built when you order is placed; average build time is about 3-4 days. The ARRL Online Library - New in 2015, The ARRL Online Library is a free repository of educational presentations and oral history, to better preserve Amateur Radio's history and help educate clubs and individuals. This is a great omnidirectional gain antenna! 20 meter wire J-pole: This end-fed half wave radiator is simple to make and even simpler to put up with a single rope. Delta Loop Antenna 19 30. On most of the J Pole designs out there, a choke should be used as close to the feedpoint of the antenna as possible to help prevent rf on the feedline and creating difficulty with SWR readings. The 5/8 wave antenna is easier to tune and not as cranky about mounting location and nearby objects as the J-Pole. I've constructed a 144/440 Dual band Open Stub J-Pole Antenna. I already have an 80-meter dipole and I really enjoy CW on. Williams, GW0GHF 5/8 Six Meter Vertical-- by G3JVL 50 Mhz Antennas By ON4ANT Six Meter Antennas A Bunch -- From The UKSMG News Six Meter J-Pole -- By K4ABT Super J-Pole Antenna (Collinear Design) - By KB0YKI. The antenna I constructed was made of 1/2" tubing. Without Radials. And when your neighbors still talk to you, your antenna is to small. 2006) might do the job. Then, you cut a hole in the side of your PVC antenna mast base, run your RG-6 antenna cable, and test your radio! So far, I have great tx/rx with the repeaters I can normally hit with my j-pole. If you use separate antennas for VHF and UHF, diplexers are available to split the one port into two. 6 out of 5 stars 3. This page describes my homebrew 80/40 meter trap vertical. A 6 meter vertical antenna must have at least 18 feet of active antenna to have 3 dB gain over a 1/2-wave dipole, and even then it might not be at the horizon, or may have coil losses, etc. One way to do that is to replace that little rubber duck antenna with the ever-popular Twinlead J-Pole. FlightAware. However, if you use a separate antenna for the HF bands, and another for 6 meters as I do, you need an antenna switch. home brew project du1ec. Radiowavz JP6S 6 Meter Portable J-Pole Antenna with SMA Connector and Carry Case. I want a ham radio and to learn all about them. On vhf you can easily design a single feed 2 and 6 meter antenna. It rolls up and fits into the bag with no problem. The great thing about J-Pole antennas is their simple design and excellent performance. The antenna can be built with commonly available materials from the nearest building supply outlet or neighborhood hardware store. The antenna itself is 5 meters long, and matching is obtained using lambda/4 coaxial stub. Shown is empirical evidence why this is a problem and a very simple solution all future grounded j-pole antennas should incorporate. The 43 foot vertical antenna is a popular height being promoted by several antenna manufacturers for 160 to 10 meters. Hanging the antenna from a tree presented several constraints such as a. The unique design characteristics of this 6-80 Meter HF JPole antenna enables. 50MHz antennas plans, homemade antennas for the six meters category is a curation of 162 web resources on , J-Pole Antenna for your Packet Radio Station, J Pole antenna for 6 meters, The M2 6M7JHV Antenna. Indoor/Outdoor 2 meter/70cm Slim Jim/ J-pole Roll Up antenna - Duration: 4:56. Both are sort of high in SWR on 70 cm, which really isn't that big'a deal. Dirt-Cheap Ham Radio Antenna Tuner | DISASTER Recovery Manager Licensed ham radio operators are unique in that they are specifically authorized to construct their own radio equipment. This Pin was discovered by Chris Ham. Second, the feed point seems to be at a different point. End result?. If you are in a search for an Ideal Beam Antenna; you can go ahead with this project. Worth talked about his new antennas at one of the club meetings and I asked him to forward me some pictures to post on the club web site. The J-pole is an excellent solution for me, and it will get me on the air from 80m to 10m rather than just 40m. Omnidirectional. 19-20 Here's how to turn a 30-meter quarter-wave vertical into a 5/8-wave radiator for the 12-meter band. I've heard Tim (HLR) and others talking about it, so this morning just before work I fired up the Flex 1500 (5 watts outpoot) and using a 220 Ft long flat top at 90 Ft, I was able to work 2 Italian stations, the Ukraine, and Germany through modest pileups. 5" elements, unless you have a UHF SWR meter and want to spend a lot of time installing the antenna, measuring SWR, taking it down, trimming the elements, re-installing the antenna, measuring SWR, taking it back down, trimming the elements again, etc. On vhf you can easily design a single feed 2 and 6 meter antenna. The maximum forward GAIN is about 8,17 DBi (6 DBd) on 145 MHZ. I have an MFJ 902 6 through 80 meter antenna tuner. This is the hairpin match I made for a 6 meter yagi. Due to material, I decided on a 5 element Yagi built for VHF since all I would have to buy is more 3/8″ round stock. Enter the desired frequency. Up-and-Outer dipole cutted for 20m on 6m fishing pole, useful antenna: fast to mount (2min), cheap, I use it on 40-10m with a tuner, or attached directly to rig in 20 meter band; Rabbit ears dipole for VHF (6-2m), also used on 10-12m with tuner; 2m twin lead rollable J-pole. How close can I mount two VHF/UHF antennas | KB9VBR J-Pole Read more Portable 2 Meter. Deze pin is ontdekt door Willem Jonkers. The homebrew J-Pole I was using would be okay, but it was limited to the 2 meter band and some of the repeaters in the area are in the 70 centemeter band. This page describes my homebrew 80/40 meter trap vertical. Antenna open stub J-Pole which is made and sold by Allen Lowe (NoIMW) for $39. Bu Pin, TA7OM tarafından keşfedildi. Building a Carbon Fibre Dual Band Yagi Antenna for Amateur Read more. I'd like to make a 5/8-wave vertical element, but I don't quite have the room for 5/8-wave ground plane elements in the location in which I'm installing this antenna.