10m slim jim antenna. 2m Slim Jim antenna made for under £10 The N9TAX Slim Jim antenna is the highest quality roll up antenna available today. Features There are times when you may need more gain than the standard J-Pole antenna. Indeed, many newer amateurs think of the slim jim as a unique antenna, and some have claimed extraordinary performance capabilities for it--all without a good sense of what it takes to make The N9TAX Slim Jim antenna is the highest quality roll up antenna available today. 2 Meter Slim Jim antenna from Ordinary Wires - Slim Jim (J Integrated Match J-Pole) is probably the most easiest and 10m Slim Jim antenna - G0KYA slim jim antenna for 10 meters band SLIM-JIM 2m antenna - The slim-jim antenna for 144 MHz Vielleicht ist ein Vergleich zwischen einer Monoband- und einer Multibandantenne etwas unfair. Want to homebrew an antenna for 2M? Want something that actually works well? Want to get it up and running in an hour or less? Enter the slim jim variation on the jpole. The Slim Jim, designed by the late Fred Judd, G2BCX, can be a great portable 'roll up' antenna, if made out of 300Ω or 450Ω ladder line / twin feeder. The design uses a matching system like a j-pole antenna. Cebik web site – requires registration (free) Commercial 2M 70cm Slim Jim – N9TAX. For 2 meters, the coil is 4 turns of coax at 5 inches in diameter. The Slim Jim Antenna The Slim Jim is a vertically polarized omnidirectional end-fed antenna having considerable "gain" and this is concentrated almost parallel to ground toward the horizon rather than skyward making it more efficient than a ground plane type antenna by about 50 percent better. Many users of the SlimJIM participate in the bewilderment as well. Please restrain custom work to the 136-999mhz range. more gain) False, utterly. 2M Slim Jim antenna using Aluminum Tubing. These antennas can be used Handmade Slim Jim Antenna's by N9TAX Let me start by saying that since discovering the slim jim antenna design I have really come to respect these antennas. Sales of the 6 meter J-Pole antenna are temporarily suspended until after the holiday season. Why would I choose a Slim Jim antenna. This in itself says something about the dedication I have to creating a quality product. com/And Pa Oct 23, 2020 · Antenna design. It is likely that any real world tests that show the Slim Jim to have better low angle Jul 26, 2020 · Eine Slim-Jim-Antenne kann mit einfachen Mitteln gebaut werden. The Slim Jim antenna is a flexible antenna made from ladder line. Traditional J-pole Antenna. Resources listed under Slim Jim Antenna category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. . About custom tuned antennas. I've been producing these antennas professionally for nearly a decade now and have sold over 15000 units. The Slim Jim vs J Pole. Judd, G2BCX) Jan 10, 2021 · A Slim Jim antenna is basically similar to a Jpole design, but it exhibits a lower radiation angle in the range of 8-10 degrees on the horizon, compared to 1/2 wave Jpole which exhibits a 20-30 degree angle on the horizon. I made a few contacts with a few local hams whom I could not hear on my previous 10m dipole in inverted-V configuration. Features . Slim Jim and J Pole calculator Slim Jim / J Pole antenna calculator. The two ends are soldered together to make a loop and a small gap cut out of one side of the ladder line, the Coax So what is a Slim Jim Antenna and why would you want one in your radio kit bag? Jan 13, 2017 · For 10m operation, try reducing the half wave section to 5. 95 total shipping Antenne Slim Jim VHF J'ai rédigé cet article sur le site web F5KIN il y a plusieurs années, le voici de nouveau pour ceux qui ne l'auraient pas lu. (The same type used for TV antenna installations. ) It is very easy to build and does not take days to construct. 96 vf Actual wavelength 0,74 metres Wavelength considering velocity factor 0,71 metres A. 00 = $48. n9tax. L'auteur de cette antenne est G2BCX,il s'agit d'un dipôle 1/2 onde replié, alimenté à sa base par une ligne 1/4 onde. I also follow up with a f 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. For dimensions see PDF. comThis video dives into the design use and configurations of N9TAX Slim Jim antennas. This antenna design does not need a ground plane and is ideal for mounting inside PVC piping to protect it from the elements. Half wave radiator section (λ/2)x vf 35,5 cm Mar 26, 2022 · Check out our website! http://www. Aug 23, 2015 · 1/4 Wave 2m 4m 10m 15m 21MHz 28MHz 70MHz 144MHz 160m Amplifier Amsat Antenna Anytone AT-588 Backpackers BLF 278 Calculator Construction Contest Coupler DK7ZB Dungeness End Fed FM FT-897D Half Wave IC-7200 ID-51 International Space Station Inverted V ISS J Pole Linear Monoband MOSFET Portable quarter wave Secret Nuclear Bunker Slim Jim Space Jun 29, 2017 · N9TAX 2m Slim Jim Antenna Review. The 450 OHM Ladder Line Slim Jim Antenna. I opted for the first for my experiments and finally choose the solid copper wire for the final construction project. B. L. Ähnlich wie bei der J-Pole-Antenne bietet sich für den portablen Einsatz Bandleitung als Basi The N9TAX Slim Jim antenna is the highest quality roll up antenna available today. This calculator can be used to design a Slim Jim or a J Pole antenna. Listed under the Antennas/Slim Jim category that is about Slim Jim Antenna. Has anyone ever tried to build a 27/28 Mhz 'Slim Jim' style antenna ? I have built successful models for 2M & 70 cms but 27/28 eludes me. Features The Slim Jim antenna is an extended version of the J-Pole antenna, using the same matching stub principle. kvhf-copper-slim-jim-antenna-construction- complete The "Slim Jim" antenna has grown so popular among new radio amateurs who need a good antenna to work 2-meter repeaters that is has acquired its own name. THIS IS AN OVERSIZE PACKAGE and if you are truly interested in it, there will be a $20 shipping surcharge to make up for the additional shipping costs (28. C. Let’s view representative chamber measurements of another SlimJIM and a J-pole antenna. 4m Slim Jim Antenna - This 4m Slim Jim is cheap Dec 14, 2022 · Easy to build 10 Meter vertical antenna. 7. Constructing the Slim JIM. 22. Slim Jim / J Pole antenna calculator. 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. Not difficult but it takes a little bit of time. Simulation (and common sense) suggests that they are practically identical. Frequency (MHz): Input the frequency for calculations Velocity factor: The conductive material user for the antenna’s radiating element will affect how well RF propagates through it and certain materials can slow the RF. Dec 2, 2022 · 40m End Fed Half Wave (EFHW) Antenna 2m Slim Jim Antenna for SOTA – 4 Jun 2013 Squid Pole Support for Testing Antennas HF Magnetic Loop for Chasing SOTA – Part 1 SOTA Mountain Hunter Award – 15 September 2013 SOTA Activation 2 summits at Mittagong NSW – 1 November 2013 HF Magnetic Loop for Chasing SOTA – Part 2 Making a 20m SlimJIM/Zepp for use during my Parachute Mobile jumps. Slim Jim 2M Antenna – SV5BYR. These antennas are hand made and very high quality. Plus the antenna also have the great low noise floor and wide bandwidth typical of our other antennas. com May 26, 2016 · Slim Jim vs. The length of the antenna is three quarter wavelength. Build the Slim Jim Antenna. Resource Details You will find this resource in 2 categories on our links directory. Many have tried to copy this antenna over the years but none compare to the Authentic N9TAX antenna. You can typically make one of these for under £10, they roll up easily for storage and travel, and are great for use at home, or when travelling, for accessing local repeaters. Antenna battle between two popular roll-up Jpole ham radio antennas. We do not accept returns on custom product. Jul 22, 2012 · You really want an antenna with some gain once you consider the amount of energy that is lost by the duplexer, combiner, filters, and feedline. Aug 17, 2015 · The 70MHz slim jim on 10m pole I set up a slim jim made from 450Ω feeder on a 10 metre fibreglass pole on a small local hill (away from the QRM) and used the Anytone AT588 with 50w on FM. Half wave 1/4 Wave 2m 4m 10m 15m 21MHz 28MHz 70MHz 144MHz 160m Amplifier Amsat Antenna Anytone AT-588 Mar 14, 2018 · I made this 11 meter CB slim jim antenna out of 450 ohm ladder line with instructions on a 10 meter version online. May 21, 2021 · Hi. The Slim Jim is a vertically polarized omnidirectional end-fed antenna having considerable "gain" and this is concentrated almost parallel to ground toward the horizon rather than skyward making it more efficient than a ground plane type antenna by about 50 percent better. The title of the main category is 10M and it deals mainly with antenna projects HAM RADIO: Easy SlimJim / J-Pole Dual band Antenna Build for 2m/70cm, Thanks to a book I purchased many moons ago, I have found the perfect way to pass a ra Building on the initial design of the slim jim we added traps that allow proper 70cm operation. The Slim Jim has a lower takeoff angle and more compressed radiation pattern. Solder the center conductor and the coaxial braid to the proper locations on the antenna. Antennas/Slim Jim; Antennas/10M; The title of the main category is 10M and it deals mainly with antenna projects for 10 meters band. Overall length (λ/3)x vf (plus gap for Slim Jim) 53,2 cm (J Pole) 53,9 cm (Slim Jim) B. Frequency 406. A start to finish antenna build of a ladder line J pole antenna cut for the 10 meter band. I can't take much credit for this. 5db of gain and an 8 degree RF takeoff angle. Which will win? You can support the HRCC via our store: https://hamtactical. From the abstract: “Due to the addition of a parallel element, the Slim Jim antenna has a considerable horizontal gain over the Jpole antenna. This 2 Meter 300 Ohm Slim Jim antenna is constructed from regular 300 ohm twinlead. As we will see below, the SlimJim antenna performs admirably in both simulations and chamber measurements. 95 + 20. 10 metres and the quarter wave section to 2. The antenna however yields only j-pole gain on 70cm. Jan 1, 2014 · Slim Jim is a special wire antenna which has impedance selectivity of 50Ω, 100Ω, 200Ω and 400Ω. This antenna has been build with the help of my friend, Amet who is a trained electrician. Trotzden treten in diesem Video eine Slim-Jim und eine ZS6BKW THE 2 METER SLIM JIM COPPER TUBING ANTENNA PROJECT BY RICHARD KE5FXU SK (Updated 1-16-2012) (Credit for the original design goes to F. It can be built for almost any frequency! Mar 1, 2022 · STEPS #22 to #25: COMPLETE THE ANTENNA. This is called the j integrated match (jim) the antenna itself is very slim hence the name Slim Jim. ”[4] Sounds promising. removed my N9TAX Slim Jim antenna and giving it a detailed look after 4 years as a home base antenna The J Pole antenna is a simplified version of the Slim Jim antenna, using the same matching stub principle. This is a full Power UHF/GMRS antenna that Oct 21, 2012 · The J-Pole is an excellent antenna for satellite or International Space Station reception. 75 meter long. Oct 12, 2015 · antenna projects for 10 meters band category is a curation of 88 web resources on , The 10 Meter Loop Antenna, The HF Satellite Antenna for 10 and 15 meters, A 10 metre EH Antenna. I finally made this 10m vertical Slim Jim based on M0UKD calculator. Links and further information for the Slim Jim antenna: Original Slim Jim article by Fred Judd, G2BCX from "Out of Thin Air" published by PW Magazine Slim Jim antenna project on Hamuniverse. (ie. Resources listed under 10 Meter Antennas category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. Handmade Slim Jim Antenna by . Quality Slim jim portable amateur radio antennas. I had help to resize it Are you looking for a UHF omni antenna with a little more gain? Our UHF Slim Jim Antenna delivers up to 6dbi of gain on the 440 - 470 Mhz UHF bands, which is almost twice the gain of a J-Pole and 5 times the gain of a 1/4 wave ground-plane antenna. The top one will be to put a cable tie loop as an attachment point for the antenna. There was some slow QSB, but we made the contact. January 1, 2021 June 29, 2017 by 2m 6m 10m 15m 20m 40m 43 foot 70cm 80m AHVD APRS Baluns battery BigIR copper Diamond dipole DX 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 holiday shipping surcharge that carriers have enacted have almost doubled the cost of shipping this antenna. Melt (with a solder iron) or drill holes in the top and bottom solid plastic portion of the antenna. Without these traps the folded dipole offers little to no resonance on 70cm. [5] [1] [6] For a transmitting antenna to operate efficiently, absorbing all the power provided by its feedline, the antenna must be impedance matched to the line; it must have a resistance equal to the feedline's characteristic impedance. There are many rumours on the Internet, claiming that the Slim Jim has better performance than the J Pole. 53 metres. The original 2m Slim Jim was designed by Fred Judd G2BCX, who lived in Norfolk before he became SK some years ago. 2 Meter Slim Jim Antenna Using 300 Ohm Twinlead This design is based on the standard Slim Jim antenna. j vertical antennas for 10 meter band a slim jim for 28 mhz with photos and plans. The end fed folded dipole design of the Slim Jim gives you about 5. I tried to follow a version from an old practical wireless magazine article and built it out of 22mm and 15mm copper tube. Ingredients:51 feet of ladder linean SO-2 2 Meter Slim Jim Antenna Aluminum Tubing Version by 9W2WTF, Mohammad (See updated information by KD8FQM at bottom of article) This antenna is specifically built to resonate within the 2 meter amateur radio band (144-148MHz). It turned out pretty well tuned, and my 27’ fishing pole mast was just tall enough to hang it up. By KE4NU - Alan Wilson, Victor, MT. These two features of the antenna gives you about twice the gain as a standard J-Pole. Due to the addition of a parallel element, the Slim Jim antenna has a considerable horizontal Portable HF Antenna covering 40 Meters through 10 Meters Product Manuals Download Product Manual Skip to Main Content Join our E-mail list & receive your FREE MFJ-3302 book:"73 dipole & Long Wire Antennas". John Huggins KX40 covers this question on this page. Slim Jim Antenna category is a curation of 29 web resources on , 2m Slim-Jim Aerial using Ladder-Line, 2 Meter Slim Jim Antenna, Slim Jim vs J-Pole. Jul 8, 2015 · The Slim Jim is probably one of the cheapest and easiest antennas to make, and it’s a very handy one too. The students setup and evaluate with HFSS a dipole, a folded dipole, a j-pole and a 2BCX Slim Jim. All one needs to do is Google “SlimJim Gain” to find the discussions on E-Ham, the Zed, etc. (Slim Jim) B. If no tuning is specified the antenna will be cut to the Amateur 2 Meter band 144-148 Mhz. Antennas & Antenna Systems, TM11-314, 1943 (US War Department). and more. It radiates and receives in an omni-directional pattern. Calculator explained. The SlimJIM isn’t a bad antenna. Still, the 2 meter Slim Jim makes a great antenna for a repeater. They should look like this: 23. Aug 19, 2015 · Comparative Analysis of Slim Jim Antenna for Ham Radio Applications. Aug 31, 2011 · 10m Slim Jim antenna. See below the Slim-Jim antenna design. Antennas typically are usable ~5mhz in either direction of the center frequency. This makes the 2 Meter Slim Jim antenna a great solution for repeater sites, data and packet stations, APRS Mar 12, 2017 · Doing some changes around my home communications setups. Slim Jim Build. If you chose to have the antenna cut to a custom frequency please understand the following. According to references, this antenna can be constructed from anything such as; twin lead 300 ohm TV antenna lead-in, copper and aluminum tubing and solid copper wire. 050MHz Velocity Factor (see text*) 0. n9taxlabs. com The J-pole antenna is an end-fed omnidirectional half-wave antenna that is matched to the feedline by a shorted quarter-wave parallel transmission line stub. a 10 meters band slim jim antenna project made with a 450 ohm slotted ribbon cable and secured on a 8 m fishing pole by steve g0kya. Some Notes on the Slim Jim Antenna – M0UXB. kgpk rsqiqeu xrep oowi cdmqm tpspqr ttemk xreywe rbmnmgg lwbw